>> 数据表复制
当表目标表存在时：
insert into 目的数据库..表 select * from 源数据库..表
当目标表不存在时：
select * into 目的数据库..表 from 源数据库..表
复制数据表结构，不复制内容
select * into 数据库名.dbo.新表名 from 数据库名.dbo.原表名 where 1=0
>> 修改数据库显示的时间
--修改前时间 select getdate() --打开高级系统控制选项 EXEC master.dbo.sp_configure 'show advanced options', 1 RECONFIGURE --修改执行权限,这样就可以执行修改时间的命令了 EXEC master.dbo.sp_configure 'xp_cmdshell', 1 RECONFIGURE --修改系统时间 exec master..xp_cmdshell 'date 2008-10-23' exec master..xp_cmdshell 'time 11:30:15' --修改后时间 select getdate() --与数据库所在计算机的时间同步 exec master.dbo.xp_cmdshell 'net time /localhost /set /Y' --同步后时间 select getdate()
>> 数据库操作示例
string strconn = ConfigurationSettings.AppSettings["dsn"];//要连接的数据库字符串 SqlConnection cnn = new SqlConnection(strconn); SqlCommand cmd = new SqlCommand(); SqlTransaction transaction = null; try { cnn.Open(); transaction = cnn.BeginTransaction(); cmd.Transaction = transaction; cmd.Connection = cnn; string strSql1= ""; cmd.CommandType = CommandType.Text; cmd.CommandText = strSql1; cmd.ExecuteNonQuery(); string strSql2= ""; cmd.CommandType = CommandType.Text; cmd.CommandText = strSql2; cmd.ExecuteNonQuery(); // 提交事务 transaction.Commit(); } catch(Exception ex) { //回滚事务 transaction.Rollback(); } finally { cnn.Close(); }
sql1="INSERT INTO tablename(Id,col1,col2) VALUES(@Id,@col1,@col2) update tablename2 set col=@col"; sql2="INSERT INTO tablename3(Id,col1,col2) VALUES(@Id,@col1,@col2)"; //参数设置（略） using(SqlTransaction tran = SqlHelper.BeginTransaction(SqlHelper.DBConnectionString)) { try { //SqlHelper.TransExecuteNonQuery(tran,CommandType.Text,sql1,parms); //SqlHelper.TransExecuteNonQuery(tran,CommandType.Text,sql2,parms); //更正为 SqlHelper.ExecuteNonQuery(tran,CommandType.Text,sql1,parms); SqlHelper.ExecuteNonQuery(tran,CommandType.Text,sql2,parms); tran.Commit(); return true; } catch { tran.Rollback(); return false; } public static SqlTransaction BeginTransaction(string con) { SqlConnection connection = new SqlConnection(con); connection.Open(); SqlTransaction tran = connection.BeginTransaction(); return tran; }
using System; using System.Data; using System.Xml; using System.Data.SqlClient; using System.Collections; using System.Configuration; namespace Web { /// <summary> /// 数据访问层，提供处理Sql Server 2000数据库的各种方法 /// </summary> public class SQLHelper { public static string connectionString = ConfigurationManager.ConnectionStrings["sqlconn"].ToString(); /// <summary> /// 数据库事务实例化 /// </summary> /// <param name="con"></param> /// <returns></returns> public static SqlTransaction BeginTransaction(string con) { SqlConnection connection = new SqlConnection(con); connection.Open(); SqlTransaction tran = connection.BeginTransaction(); return tran; } #region private utility methods & constructors // Since this class provides only static methods, make the default constructor private to prevent // instances from being created with "new DBHelper()" private SQLHelper() { } /// <summary> /// This method is used to attach array of SqlParameters to a SqlCommand. /// /// This method will assign a value of DbNull to any parameter with a direction of /// InputOutput and a value of null. /// /// This behavior will prevent default values from being used, but /// this will be the less common case than an intended pure output parameter (derived as InputOutput) /// where the user provided no input value. /// </summary> /// <param name="command">The command to which the parameters will be added</param> /// <param name="commandParameters">An array of SqlParameters to be added to command</param> private static void AttachParameters(SqlCommand command, SqlParameter[] commandParameters) { if (command == null) throw new ArgumentNullException("command"); if (commandParameters != null) { foreach (SqlParameter p in commandParameters) { if (p != null) { // Check for derived output value with no value assigned if ((p.Direction == ParameterDirection.InputOutput || p.Direction == ParameterDirection.Input) && (p.Value == null)) { p.Value = DBNull.Value; } command.Parameters.Add(p); } } } } /// <summary> /// This method assigns dataRow column values to an array of SqlParameters /// </summary> /// <param name="commandParameters">Array of SqlParameters to be assigned values</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values</param> private static void AssignParameterValues(SqlParameter[] commandParameters, DataRow dataRow) { if ((commandParameters == null) || (dataRow == null)) { // Do nothing if we get no data return; } int i = 0; // Set the parameters values foreach (SqlParameter commandParameter in commandParameters) { // Check the parameter name if (commandParameter.ParameterName == null || commandParameter.ParameterName.Length <= 1) throw new Exception( string.Format( "Please provide a valid parameter name on the parameter #{0}, the ParameterName property has the following value: '{1}'.", i, commandParameter.ParameterName)); if (dataRow.Table.Columns.IndexOf(commandParameter.ParameterName.Substring(1)) != -1) commandParameter.Value = dataRow[commandParameter.ParameterName.Substring(1)]; i++; } } /// <summary> /// This method assigns an array of values to an array of SqlParameters /// </summary> /// <param name="commandParameters">Array of SqlParameters to be assigned values</param> /// <param name="parameterValues">Array of objects holding the values to be assigned</param> public static void AssignParameterValues(SqlParameter[] commandParameters, params object[] parameterValues) { if ((commandParameters == null) || (parameterValues == null)) { // Do nothing if we get no data return; } // We must have the same number of values as we pave parameters to put them in if (commandParameters.Length != parameterValues.Length) { throw new ArgumentException("Parameter count does not match Parameter Value count."); } // Iterate through the SqlParameters, assigning the values from the corresponding position in the // value array for (int i = 0, j = commandParameters.Length; i < j; i++) { // If the current array value derives from IDbDataParameter, then assign its Value property if (parameterValues[i] is IDbDataParameter) { IDbDataParameter paramInstance = (IDbDataParameter)parameterValues[i]; if (paramInstance.Value == null) { commandParameters[i].Value = DBNull.Value; } else { commandParameters[i].Value = paramInstance.Value; } } else if (parameterValues[i] == null) { commandParameters[i].Value = DBNull.Value; } else { commandParameters[i].Value = parameterValues[i]; } } } /// <summary> /// This method opens (if necessary) and assigns a connection, transaction, command type and parameters /// to the provided command /// </summary> /// <param name="command">The SqlCommand to be prepared</param> /// <param name="connection">A valid SqlConnection, on which to execute this command</param> /// <param name="transaction">A valid SqlTransaction, or 'null'</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParameters to be associated with the command or 'null' if no parameters are required</param> /// <param name="mustCloseConnection"><c>true</c> if the connection was opened by the method, otherwose is false.</param> private static void PrepareCommand(SqlCommand command, SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, out bool mustCloseConnection) { if (command == null) throw new ArgumentNullException("command"); if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText"); // If the provided connection is not open, we will open it if (connection.State != ConnectionState.Open) { mustCloseConnection = true; connection.Open(); } else { mustCloseConnection = false; } // Associate the connection with the command command.Connection = connection; // Set the command text (stored procedure name or SQL statement) command.CommandText = commandText; // If we were provided a transaction, assign it if (transaction != null) { if (transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); command.Transaction = transaction; } // Set the command type command.CommandType = commandType; // Attach the command parameters if they are provided if (commandParameters != null) { AttachParameters(command, commandParameters); } return; } #endregion private utility methods & constructors #region ExecuteNonQuery /// <summary> /// AddExecuteNonQuery /// </summary> /// <param name="commandText"></param> /// <returns></returns> public static int ExecuteNonQuery( string commandText) { return ExecuteNonQuery(connectionString, CommandType.Text, commandText, (SqlParameter[])null); } public static int ExecuteNonQuery(string commandText,params SqlParameter[] para) { return ExecuteNonQuery(connectionString, CommandType.Text, commandText, para); } /// <summary> /// Execute a SqlCommand (that returns no resultset and takes no parameters) against the database specified in /// the connection string /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders"); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteNonQuery(connectionString, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns no resultset) against the database specified in the connection string /// using the provided parameters /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(connString, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Call the overload that takes a connection in place of the connection string return ExecuteNonQuery(connection, commandType, commandText, commandParameters); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns no resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int result = ExecuteNonQuery(connString, "PublishOrders", 24, 36); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored prcedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(string connectionString, string spName, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connectionString, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteNonQuery(connection, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns no resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(conn, CommandType.StoredProcedure, "PublishOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection"); // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection); // Finally, execute the command int retval = cmd.ExecuteNonQuery(); // Detach the SqlParameters from the command object, so they can be used again cmd.Parameters.Clear(); if (mustCloseConnection) connection.Close(); return retval; } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int result = ExecuteNonQuery(conn, "PublishOrders", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteNonQuery(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns no resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "PublishOrders"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteNonQuery(transaction, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns no resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int result = ExecuteNonQuery(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection); // Finally, execute the command int retval = cmd.ExecuteNonQuery(); // Detach the SqlParameters from the command object, so they can be used again cmd.Parameters.Clear(); return retval; } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int result = ExecuteNonQuery(conn, trans, "PublishOrders", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQuery(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName); } } #endregion ExecuteNonQuery #region ExecuteDataset /// <summary> /// AddExecuteDataset /// </summary> /// <param name="commandText"></param> /// <returns></returns> public static DataTable ExecuteDataTable(string commandText) { return ExecuteDataset(connectionString, CommandType.Text, commandText, (SqlParameter[])null).Tables[0]; } public static DataTable ExecuteDataTable(string commandText,params SqlParameter[] para) { return ExecuteDataset(connectionString, CommandType.Text, commandText,para).Tables[0]; } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in /// the connection string. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteDataset(connectionString, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Call the overload that takes a connection in place of the connection string return ExecuteDataset(connection, commandType, commandText, commandParameters); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// DataSet ds = ExecuteDataset(connString, "GetOrders", 24, 36); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(string connectionString, string spName, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connectionString, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteDataset(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteDataset(connection, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection"); // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection); // Create the DataAdapter & DataSet using (SqlDataAdapter da = new SqlDataAdapter(cmd)) { DataSet ds = new DataSet(); // Fill the DataSet using default values for DataTable names, etc da.Fill(ds); // Detach the SqlParameters from the command object, so they can be used again cmd.Parameters.Clear(); if (mustCloseConnection) connection.Close(); // Return the dataset return ds; } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// DataSet ds = ExecuteDataset(conn, "GetOrders", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteDataset(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteDataset(transaction, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// DataSet ds = ExecuteDataset(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection); // Create the DataAdapter & DataSet using (SqlDataAdapter da = new SqlDataAdapter(cmd)) { DataSet ds = new DataSet(); // Fill the DataSet using default values for DataTable names, etc da.Fill(ds); // Detach the SqlParameters from the command object, so they can be used again cmd.Parameters.Clear(); // Return the dataset return ds; } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// DataSet ds = ExecuteDataset(trans, "GetOrders", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDataset(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteDataset(transaction, CommandType.StoredProcedure, spName); } } #endregion ExecuteDataset #region ExecuteReader /// <summary> /// This enum is used to indicate whether the connection was provided by the caller, or created by DBHelper, so that /// we can set the appropriate CommandBehavior when calling ExecuteReader() /// </summary> private enum SqlConnectionOwnership { /// <summary>Connection is owned and managed by DBHelper</summary> Internal, /// <summary>Connection is owned and managed by the caller</summary> External } public static SqlDataReader ExecuteReader(string commandText) { return ExecuteReader(connectionString, CommandType.Text, commandText, (SqlParameter[])null); } public static SqlDataReader ExecuteReader(string commandText,params SqlParameter[] para) { return ExecuteReader(connectionString, CommandType.Text, commandText, para); } /// <summary> /// Create and prepare a SqlCommand, and call ExecuteReader with the appropriate CommandBehavior. /// </summary> /// <remarks> /// If we created and opened the connection, we want the connection to be closed when the DataReader is closed. /// /// If the caller provided the connection, we want to leave it to them to manage. /// </remarks> /// <param name="connection">A valid SqlConnection, on which to execute this command</param> /// <param name="transaction">A valid SqlTransaction, or 'null'</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParameters to be associated with the command or 'null' if no parameters are required</param> /// <param name="connectionOwnership">Indicates whether the connection parameter was provided by the caller, or created by DBHelper</param> /// <returns>SqlDataReader containing the results of the command</returns> private static SqlDataReader ExecuteReader(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, SqlParameter[] commandParameters, SqlConnectionOwnership connectionOwnership) { if (connection == null) throw new ArgumentNullException("connection"); bool mustCloseConnection = false; // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); try { PrepareCommand(cmd, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection); // Create a reader SqlDataReader dataReader; // Call ExecuteReader with the appropriate CommandBehavior if (connectionOwnership == SqlConnectionOwnership.External) { dataReader = cmd.ExecuteReader(); } else { dataReader = cmd.ExecuteReader(CommandBehavior.CloseConnection); } // Detach the SqlParameters from the command object, so they can be used again. // HACK: There is a problem here, the output parameter values are fletched // when the reader is closed, so if the parameters are detached from the command // then the SqlReader can磘 set its values. // When this happen, the parameters can磘 be used again in other command. bool canClear = true; foreach (SqlParameter commandParameter in cmd.Parameters) { if (commandParameter.Direction != ParameterDirection.Input) canClear = false; } if (canClear) { cmd.Parameters.Clear(); } return dataReader; } catch { if (mustCloseConnection) connection.Close(); throw; } } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in /// the connection string. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteReader(connectionString, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(connString, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); SqlConnection connection = null; try { connection = new SqlConnection(connectionString); connection.Open(); // Call the private overload that takes an internally owned connection in place of the connection string return ExecuteReader(connection, null, commandType, commandText, commandParameters, SqlConnectionOwnership.Internal); } catch { // If we fail to return the SqlDatReader, we need to close the connection ourselves if (connection != null) connection.Close(); throw; } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// SqlDataReader dr = ExecuteReader(connString, "GetOrders", 24, 36); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(string connectionString, string spName, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connectionString, spName); AssignParameterValues(commandParameters, parameterValues); return ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteReader(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteReader(connection, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { // Pass through the call to the private overload using a null transaction value and an externally owned connection return ExecuteReader(connection, (SqlTransaction)null, commandType, commandText, commandParameters, SqlConnectionOwnership.External); } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// SqlDataReader dr = ExecuteReader(conn, "GetOrders", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); AssignParameterValues(commandParameters, parameterValues); return ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteReader(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteReader(transaction, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// SqlDataReader dr = ExecuteReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); // Pass through to private overload, indicating that the connection is owned by the caller return ExecuteReader(transaction.Connection, transaction, commandType, commandText, commandParameters, SqlConnectionOwnership.External); } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// SqlDataReader dr = ExecuteReader(trans, "GetOrders", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReader(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); AssignParameterValues(commandParameters, parameterValues); return ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteReader(transaction, CommandType.StoredProcedure, spName); } } #endregion ExecuteReader #region ExecuteScalar public static object ExecuteScalar(string commandText) { return ExecuteScalar(connectionString, CommandType.Text, commandText, (SqlParameter[])null); } public static object ExecuteScalar(string commandText,params SqlParameter[] para) { return ExecuteScalar(connectionString, CommandType.Text, commandText, para); } /// <summary> /// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the database specified in /// the connection string. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount"); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteScalar(connectionString, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a 1x1 resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(connString, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(string connectionString, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Call the overload that takes a connection in place of the connection string return ExecuteScalar(connection, commandType, commandText, commandParameters); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int orderCount = (int)ExecuteScalar(connString, "GetOrderCount", 24, 36); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(string connectionString, string spName, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connectionString, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteScalar(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteScalar(connection, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(conn, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection"); // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection); // Execute the command & return the results object retval = cmd.ExecuteScalar(); // Detach the SqlParameters from the command object, so they can be used again cmd.Parameters.Clear(); if (mustCloseConnection) connection.Close(); return retval; } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int orderCount = (int)ExecuteScalar(conn, "GetOrderCount", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteScalar(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns a 1x1 resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteScalar(transaction, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a 1x1 resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// int orderCount = (int)ExecuteScalar(trans, CommandType.StoredProcedure, "GetOrderCount", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection); // Execute the command & return the results object retval = cmd.ExecuteScalar(); // Detach the SqlParameters from the command object, so they can be used again cmd.Parameters.Clear(); return retval; } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// int orderCount = (int)ExecuteScalar(trans, "GetOrderCount", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalar(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // PPull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteScalar(transaction, CommandType.StoredProcedure, spName); } } #endregion ExecuteScalar #region ExecuteXmlReader /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command using "FOR XML AUTO"</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteXmlReader(connection, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// XmlReader r = ExecuteXmlReader(conn, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command using "FOR XML AUTO"</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlConnection connection, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection"); bool mustCloseConnection = false; // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); try { PrepareCommand(cmd, connection, (SqlTransaction)null, commandType, commandText, commandParameters, out mustCloseConnection); // Create the DataAdapter & DataSet XmlReader retval = cmd.ExecuteXmlReader(); // Detach the SqlParameters from the command object, so they can be used again cmd.Parameters.Clear(); return retval; } catch { if (mustCloseConnection) connection.Close(); throw; } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// XmlReader r = ExecuteXmlReader(conn, "GetOrders", 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure using "FOR XML AUTO"</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlConnection connection, string spName, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteXmlReader(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders"); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command using "FOR XML AUTO"</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText) { // Pass through the call providing null for the set of SqlParameters return ExecuteXmlReader(transaction, commandType, commandText, (SqlParameter[])null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// XmlReader r = ExecuteXmlReader(trans, CommandType.StoredProcedure, "GetOrders", new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command using "FOR XML AUTO"</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlTransaction transaction, CommandType commandType, string commandText, params SqlParameter[] commandParameters) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); // Create a command and prepare it for execution SqlCommand cmd = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(cmd, transaction.Connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection); // Create the DataAdapter & DataSet XmlReader retval = cmd.ExecuteXmlReader(); // Detach the SqlParameters from the command object, so they can be used again cmd.Parameters.Clear(); return retval; } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// XmlReader r = ExecuteXmlReader(trans, "GetOrders", 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReader(SqlTransaction transaction, string spName, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { // Otherwise we can just call the SP without params return ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName); } } #endregion ExecuteXmlReader #region FillDataset /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the database specified in /// the connection string. /// </summary> /// <remarks> /// e.g.: /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name)</param> public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (dataSet == null) throw new ArgumentNullException("dataSet"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Call the overload that takes a connection in place of the connection string FillDataset(connection, commandType, commandText, dataSet, tableNames); } } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the database specified in the connection string /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> public static void FillDataset(string connectionString, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (dataSet == null) throw new ArgumentNullException("dataSet"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Call the overload that takes a connection in place of the connection string FillDataset(connection, commandType, commandText, dataSet, tableNames, commandParameters); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// FillDataset(connString, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, 24); /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> public static void FillDataset(string connectionString, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (dataSet == null) throw new ArgumentNullException("dataSet"); // Create & open a SqlConnection, and dispose of it after we are done using (SqlConnection connection = new SqlConnection(connectionString)) { connection.Open(); // Call the overload that takes a connection in place of the connection string FillDataset(connection, spName, dataSet, tableNames, parameterValues); } } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlConnection. /// </summary> /// <remarks> /// e.g.: /// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> public static void FillDataset(SqlConnection connection, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames) { FillDataset(connection, commandType, commandText, dataSet, tableNames, null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// FillDataset(conn, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> public static void FillDataset(SqlConnection connection, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters) { FillDataset(connection, null, commandType, commandText, dataSet, tableNames, commandParameters); } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// FillDataset(conn, "GetOrders", ds, new string[] {"orders"}, 24, 36); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> public static void FillDataset(SqlConnection connection, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues) { if (connection == null) throw new ArgumentNullException("connection"); if (dataSet == null) throw new ArgumentNullException("dataSet"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters); } else { // Otherwise we can just call the SP without params FillDataset(connection, CommandType.StoredProcedure, spName, dataSet, tableNames); } } /// <summary> /// Execute a SqlCommand (that returns a resultset and takes no parameters) against the provided SqlTransaction. /// </summary> /// <remarks> /// e.g.: /// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> public static void FillDataset(SqlTransaction transaction, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames) { FillDataset(transaction, commandType, commandText, dataSet, tableNames, null); } /// <summary> /// Execute a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// FillDataset(trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> public static void FillDataset(SqlTransaction transaction, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters) { FillDataset(transaction.Connection, transaction, commandType, commandText, dataSet, tableNames, commandParameters); } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified /// SqlTransaction using the provided parameter values. This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <remarks> /// This method provides no access to output parameters or the stored procedure's return value parameter. /// /// e.g.: /// FillDataset(trans, "GetOrders", ds, new string[]{"orders"}, 24, 36); /// </remarks> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="parameterValues">An array of objects to be assigned as the input values of the stored procedure</param> public static void FillDataset(SqlTransaction transaction, string spName, DataSet dataSet, string[] tableNames, params object[] parameterValues) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (dataSet == null) throw new ArgumentNullException("dataSet"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If we receive parameter values, we need to figure out where they go if ((parameterValues != null) && (parameterValues.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Assign the provided values to these parameters based on parameter order AssignParameterValues(commandParameters, parameterValues); // Call the overload that takes an array of SqlParameters FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames, commandParameters); } else { // Otherwise we can just call the SP without params FillDataset(transaction, CommandType.StoredProcedure, spName, dataSet, tableNames); } } /// <summary> /// Private helper method that execute a SqlCommand (that returns a resultset) against the specified SqlTransaction and SqlConnection /// using the provided parameters. /// </summary> /// <remarks> /// e.g.: /// FillDataset(conn, trans, CommandType.StoredProcedure, "GetOrders", ds, new string[] {"orders"}, new SqlParameter("@prodid", 24)); /// </remarks> /// <param name="connection">A valid SqlConnection</param> /// <param name="transaction">A valid SqlTransaction</param> /// <param name="commandType">The CommandType (stored procedure, text, etc.)</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="dataSet">A dataset wich will contain the resultset generated by the command</param> /// <param name="tableNames">This array will be used to create table mappings allowing the DataTables to be referenced /// by a user defined name (probably the actual table name) /// </param> /// <param name="commandParameters">An array of SqlParamters used to execute the command</param> private static void FillDataset(SqlConnection connection, SqlTransaction transaction, CommandType commandType, string commandText, DataSet dataSet, string[] tableNames, params SqlParameter[] commandParameters) { if (connection == null) throw new ArgumentNullException("connection"); if (dataSet == null) throw new ArgumentNullException("dataSet"); // Create a command and prepare it for execution SqlCommand command = new SqlCommand(); bool mustCloseConnection = false; PrepareCommand(command, connection, transaction, commandType, commandText, commandParameters, out mustCloseConnection); // Create the DataAdapter & DataSet using (SqlDataAdapter dataAdapter = new SqlDataAdapter(command)) { // Add the table mappings specified by the user if (tableNames != null && tableNames.Length > 0) { string tableName = "Table"; for (int index = 0; index < tableNames.Length; index++) { if (tableNames[index] == null || tableNames[index].Length == 0) throw new ArgumentException("The tableNames parameter must contain a list of tables, a value was provided as null or empty string.", "tableNames"); dataAdapter.TableMappings.Add(tableName, tableNames[index]); tableName += (index + 1).ToString(); } } // Fill the DataSet using default values for DataTable names, etc dataAdapter.Fill(dataSet); // Detach the SqlParameters from the command object, so they can be used again command.Parameters.Clear(); } if (mustCloseConnection) connection.Close(); } #endregion #region UpdateDataset /// <summary> /// Executes the respective command for each inserted, updated, or deleted row in the DataSet. /// </summary> /// <remarks> /// e.g.: /// UpdateDataset(conn, insertCommand, deleteCommand, updateCommand, dataSet, "Order"); /// </remarks> /// <param name="insertCommand">A valid transact-SQL statement or stored procedure to insert new records into the data source</param> /// <param name="deleteCommand">A valid transact-SQL statement or stored procedure to delete records from the data source</param> /// <param name="updateCommand">A valid transact-SQL statement or stored procedure used to update records in the data source</param> /// <param name="dataSet">The DataSet used to update the data source</param> /// <param name="tableName">The DataTable used to update the data source.</param> public static void UpdateDataset(SqlCommand insertCommand, SqlCommand deleteCommand, SqlCommand updateCommand, DataSet dataSet, string tableName) { if (insertCommand == null) throw new ArgumentNullException("insertCommand"); if (deleteCommand == null) throw new ArgumentNullException("deleteCommand"); if (updateCommand == null) throw new ArgumentNullException("updateCommand"); if (tableName == null || tableName.Length == 0) throw new ArgumentNullException("tableName"); // Create a SqlDataAdapter, and dispose of it after we are done using (SqlDataAdapter dataAdapter = new SqlDataAdapter()) { // Set the data adapter commands dataAdapter.UpdateCommand = updateCommand; dataAdapter.InsertCommand = insertCommand; dataAdapter.DeleteCommand = deleteCommand; // Update the dataset changes in the data source dataAdapter.Update(dataSet, tableName); // Commit all the changes made to the DataSet dataSet.AcceptChanges(); } } #endregion #region CreateCommand /// <summary> /// Simplify the creation of a Sql command object by allowing /// a stored procedure and optional parameters to be provided /// </summary> /// <remarks> /// e.g.: /// SqlCommand command = CreateCommand(conn, "AddCustomer", "CustomerID", "CustomerName"); /// </remarks> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="sourceColumns">An array of string to be assigned as the source columns of the stored procedure parameters</param> /// <returns>A valid SqlCommand object</returns> public static SqlCommand CreateCommand(SqlConnection connection, string spName, params string[] sourceColumns) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // Create a SqlCommand SqlCommand cmd = new SqlCommand(spName, connection); cmd.CommandType = CommandType.StoredProcedure; // If we receive parameter values, we need to figure out where they go if ((sourceColumns != null) && (sourceColumns.Length > 0)) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Assign the provided source columns to these parameters based on parameter order for (int index = 0; index < sourceColumns.Length; index++) commandParameters[index].SourceColumn = sourceColumns[index]; // Attach the discovered parameters to the SqlCommand object AttachParameters(cmd, commandParameters); } return cmd; } #endregion #region ExecuteNonQueryTypedParams /// <summary> /// Execute a stored procedure via a SqlCommand (that returns no resultset) against the database specified in /// the connection string using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQueryTypedParams(String connectionString, String spName, DataRow dataRow) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connectionString, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteNonQuery(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified SqlConnection /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQueryTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteNonQuery(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns no resultset) against the specified /// SqlTransaction using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An int representing the number of rows affected by the command</returns> public static int ExecuteNonQueryTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // Sf the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteNonQuery(transaction, CommandType.StoredProcedure, spName); } } #endregion #region ExecuteDatasetTypedParams /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDatasetTypedParams(string connectionString, String spName, DataRow dataRow) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); //If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connectionString, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteDataset(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the dataRow column values as the store procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDatasetTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteDataset(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on row values. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A dataset containing the resultset generated by the command</returns> public static DataSet ExecuteDatasetTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteDataset(transaction, CommandType.StoredProcedure, spName); } } #endregion #region ExecuteReaderTypedParams /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the database specified in /// the connection string using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReaderTypedParams(String connectionString, String spName, DataRow dataRow) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connectionString, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteReader(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteReader(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>A SqlDataReader containing the resultset generated by the command</returns> public static SqlDataReader ExecuteReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteReader(transaction, CommandType.StoredProcedure, spName); } } #endregion #region ExecuteScalarTypedParams /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the database specified in /// the connection string using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalarTypedParams(String connectionString, String spName, DataRow dataRow) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connectionString, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteScalar(connectionString, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlConnection /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalarTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteScalar(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a 1x1 resultset) against the specified SqlTransaction /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An object containing the value in the 1x1 resultset generated by the command</returns> public static object ExecuteScalarTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteScalar(transaction, CommandType.StoredProcedure, spName); } } #endregion #region ExecuteXmlReaderTypedParams /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlConnection /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReaderTypedParams(SqlConnection connection, String spName, DataRow dataRow) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteXmlReader(connection, CommandType.StoredProcedure, spName); } } /// <summary> /// Execute a stored procedure via a SqlCommand (that returns a resultset) against the specified SqlTransaction /// using the dataRow column values as the stored procedure's parameters values. /// This method will query the database to discover the parameters for the /// stored procedure (the first time each stored procedure is called), and assign the values based on parameter order. /// </summary> /// <param name="transaction">A valid SqlTransaction object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="dataRow">The dataRow used to hold the stored procedure's parameter values.</param> /// <returns>An XmlReader containing the resultset generated by the command</returns> public static XmlReader ExecuteXmlReaderTypedParams(SqlTransaction transaction, String spName, DataRow dataRow) { if (transaction == null) throw new ArgumentNullException("transaction"); if (transaction != null && transaction.Connection == null) throw new ArgumentException("The transaction was rollbacked or commited, please provide an open transaction.", "transaction"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); // If the row has values, the store procedure parameters must be initialized if (dataRow != null && dataRow.ItemArray.Length > 0) { // Pull the parameters for this stored procedure from the parameter cache (or discover them & populate the cache) SqlParameter[] commandParameters = ParamsCache.GetSpParameterSet(transaction.Connection, spName); // Set the parameters values AssignParameterValues(commandParameters, dataRow); return SQLHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName, commandParameters); } else { return SQLHelper.ExecuteXmlReader(transaction, CommandType.StoredProcedure, spName); } } #endregion #region RunProc /// <summary> /// 执行一个没有参数的，只返回影响行数的存储过程。(注意，不能接收return value) /// </summary> /// <param name="procName"></param> /// <returns></returns> public static int RunProc(string connectionString, string procName) { return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, procName, (SqlParameter[])null); } /// <summary> /// 执行一个带参数的，只返回影响行数的存储过程。(注意，不能接收return value) /// </summary> /// <param name="procName"></param> /// <param name="prams"></param> /// <returns></returns> public static int RunProc(string connectionString, string procName, SqlParameter[] prams) { return ExecuteNonQuery(connectionString, CommandType.StoredProcedure, procName, prams); } /// <summary> /// 执行一个不带参数的，返回SqlDataReader的存储过程。 /// </summary> /// <param name="procName"></param> /// <returns></returns> public static void RunProc(string connectionString, string procName, out SqlDataReader reader) { reader = ExecuteReader(connectionString, CommandType.StoredProcedure, procName, (SqlParameter[])null); } /// <summary> /// 执行一个带参数的，返回SqlDataReader的存储过程。 /// </summary> /// <param name="procName"></param> /// <param name="prams"></param> /// <returns></returns> public static void RunProc(string connectionString, string procName, SqlParameter[] prams, out SqlDataReader reader) { reader = ExecuteReader(connectionString, CommandType.StoredProcedure, procName, prams); } /// <summary> /// 执行一个不带参数的，返回DataSet的存储过程。 /// </summary> /// <param name="procName"></param> /// <returns></returns> public static void RunProc(string connectionString, string procName, out DataSet ds) { ds = ExecuteDataset(connectionString, CommandType.StoredProcedure, procName, (SqlParameter[])null); } /// <summary> /// 执行一个带参数的，返回DataSet的存储过程。 /// </summary> /// <param name="procName"></param> /// <param name="prams"></param> /// <returns></returns> public static void RunProc(string connectionString, string procName, SqlParameter[] prams, out DataSet ds) { ds = ExecuteDataset(connectionString, CommandType.StoredProcedure, procName, prams); } /// <summary> /// 执行一个不带参数的，返回结果集第一行第一列的数据。为object型，通过类型强制转换得到。 /// 例如 System.Datetime dt = (System.Datetime)RunProc("GetDate"); /// </summary> /// <param name="procName">存储过程名称</param> /// <returns></returns> public static void RunProc(string connectionString, string procName, out object obj) { obj = ExecuteScalar(connectionString, CommandType.StoredProcedure, procName, (SqlParameter[])null); } /// <summary> /// 执行一个带参数的，返回结果集第一行第一列的数据。为object型，通过类型强制转换得到。 /// 例如 System.Datetime dt = (System.Datetime)RunProc("GetDate"); /// </summary> /// <param name="procName"></param> /// <param name="prams"></param> /// <returns></returns> public static void RunProc(string connectionString, string procName, SqlParameter[] prams, out object obj) { obj = ExecuteScalar(connectionString, CommandType.StoredProcedure, procName, prams); } /// <summary> /// 执行一个不带参数的，返回xmlReader结果集的存储过程。 /// </summary> /// <param name="procName"></param> /// <returns></returns> public static void RunProc(string connectionString, string procName, out XmlReader xmlReader) { xmlReader = ExecuteXmlReader(new SqlConnection(connectionString), CommandType.StoredProcedure, procName, (SqlParameter[])null); } /// <summary> /// 执行一个带参数的，返回xmlReader结果集的存储过程。 /// </summary> /// <param name="procName"></param> /// <param name="prams"></param> /// <returns></returns> public static void RunProc(string connectionString, string procName, SqlParameter[] prams, out XmlReader xmlReader) { xmlReader = ExecuteXmlReader(new SqlConnection(connectionString), CommandType.StoredProcedure, procName, prams); } #endregion #region Make SqlParameters /// <summary> /// Make input param. /// </summary> /// <param name="ParamName">Name of param.</param> /// <param name="DbType">Param type.</param> /// <param name="Size">Param size.</param> /// <param name="Value">Param value.</param> /// <returns>New parameter.</returns> public static SqlParameter MakeInParam(string ParamName, SqlDbType DbType, int Size, object Value) { return MakeParam(ParamName, DbType, Size, ParameterDirection.Input, Value); } /// <summary> /// Make input param. /// </summary> /// <param name="ParamName">Name of param.</param> /// <param name="DbType">Param type.</param> /// <param name="Size">Param size.</param> /// <returns>New parameter.</returns> public static SqlParameter MakeOutParam(string ParamName, SqlDbType DbType, int Size) { return MakeParam(ParamName, DbType, Size, ParameterDirection.Output, null); } /// <summary> /// Make stored procedure param. /// </summary> /// <param name="ParamName">Name of param.</param> /// <param name="DbType">Param type.</param> /// <param name="Size">Param size.</param> /// <param name="Direction">Parm direction.</param> /// <param name="Value">Param value.</param> /// <returns>New parameter.</returns> public static SqlParameter MakeParam(string ParamName, SqlDbType DbType, Int32 Size, ParameterDirection Direction, object Value) { SqlParameter param; if (Size > 0) param = new SqlParameter(ParamName, DbType, Size); else param = new SqlParameter(ParamName, DbType); param.Direction = Direction; if (!(Direction == ParameterDirection.Output && Value == null)) param.Value = Value; return param; } #endregion } /// <summary> /// 用来存取缓存SqlParameter[] /// </summary> public sealed class ParamsCache { #region private methods, variables, and constructors //Since this class provides only static methods, make the default constructor private to prevent //instances from being created with "new ParamsCache()" private ParamsCache() { } private static Hashtable paramCache = Hashtable.Synchronized(new Hashtable()); /// <summary> /// Resolve at run time the appropriate set of SqlParameters for a stored procedure /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="includeReturnValueParameter">Whether or not to include their return value parameter</param> /// <returns>The parameter array discovered.</returns> private static SqlParameter[] DiscoverSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); SqlCommand cmd = new SqlCommand(spName, connection); cmd.CommandType = CommandType.StoredProcedure; connection.Open(); SqlCommandBuilder.DeriveParameters(cmd); connection.Close(); if (!includeReturnValueParameter) { cmd.Parameters.RemoveAt(0); } SqlParameter[] discoveredParameters = new SqlParameter[cmd.Parameters.Count]; cmd.Parameters.CopyTo(discoveredParameters, 0); // Init the parameters with a DBNull value foreach (SqlParameter discoveredParameter in discoveredParameters) { discoveredParameter.Value = DBNull.Value; } return discoveredParameters; } /// <summary> /// Deep copy of cached SqlParameter array /// </summary> /// <param name="originalParameters"></param> /// <returns></returns> private static SqlParameter[] CloneParameters(SqlParameter[] originalParameters) { SqlParameter[] clonedParameters = new SqlParameter[originalParameters.Length]; for (int i = 0, j = originalParameters.Length; i < j; i++) { clonedParameters[i] = (SqlParameter)((ICloneable)originalParameters[i]).Clone(); } return clonedParameters; } #endregion private methods, variables, and constructors #region caching functions /// <summary> /// Add parameter array to the cache /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <param name="commandParameters">An array of SqlParamters to be cached</param> public static void CacheParameterSet(string connectionString, string commandText, params SqlParameter[] commandParameters) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText"); string hashKey = connectionString + ":" + commandText; paramCache[hashKey] = commandParameters; } /// <summary> /// Retrieve a parameter array from the cache /// </summary> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="commandText">The stored procedure name or T-SQL command</param> /// <returns>An array of SqlParamters</returns> public static SqlParameter[] GetCachedParameterSet(string connectionString, string commandText) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (commandText == null || commandText.Length == 0) throw new ArgumentNullException("commandText"); string hashKey = connectionString + ":" + commandText; SqlParameter[] cachedParameters = paramCache[hashKey] as SqlParameter[]; if (cachedParameters == null) { return null; } else { return CloneParameters(cachedParameters); } } /// <summary> /// 得到缓存中的存储过程参数。如果能得到，返回true，并out 参数出来，不能得到，则parms = null，返回false; /// 作者：:) /// </summary> /// <param name="connectiongString"></param> /// <param name="spName"></param> /// <param name="parms"></param> /// <returns></returns> public static bool GetCachedParameterSet(string connectionString, string spName, out SqlParameter[] parms) { bool hasCached = false; if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); string hashKey = connectionString + ":" + spName; SqlParameter[] cachedParameters = paramCache[hashKey] as SqlParameter[]; if (cachedParameters == null) { parms = null; } else { parms = CloneParameters(cachedParameters); hasCached = true; } return hasCached; } #endregion caching functions #region Parameter Discovery Functions /// <summary> /// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <remarks> /// This method will query the database for this information, and then store it in a cache for future requests. /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <returns>An array of SqlParameters</returns> public static SqlParameter[] GetSpParameterSet(string connectionString, string spName) { return GetSpParameterSet(connectionString, spName, false); } /// <summary> /// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <remarks> /// This method will query the database for this information, and then store it in a cache for future requests. /// </remarks> /// <param name="connectionString">A valid connection string for a SqlConnection</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="includeReturnValueParameter">A bool value indicating whether the return value parameter should be included in the results</param> /// <returns>An array of SqlParameters</returns> public static SqlParameter[] GetSpParameterSet(string connectionString, string spName, bool includeReturnValueParameter) { if (connectionString == null || connectionString.Length == 0) throw new ArgumentNullException("connectionString"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); using (SqlConnection connection = new SqlConnection(connectionString)) { return GetSpParameterSetInternal(connection, spName, includeReturnValueParameter); } } /// <summary> /// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <remarks> /// This method will query the database for this information, and then store it in a cache for future requests. /// </remarks> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <returns>An array of SqlParameters</returns> internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName) { return GetSpParameterSet(connection, spName, false); } /// <summary> /// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <remarks> /// This method will query the database for this information, and then store it in a cache for future requests. /// </remarks> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="includeReturnValueParameter">A bool value indicating whether the return value parameter should be included in the results</param> /// <returns>An array of SqlParameters</returns> internal static SqlParameter[] GetSpParameterSet(SqlConnection connection, string spName, bool includeReturnValueParameter) { if (connection == null) throw new ArgumentNullException("connection"); using (SqlConnection clonedConnection = (SqlConnection)((ICloneable)connection).Clone()) { return GetSpParameterSetInternal(clonedConnection, spName, includeReturnValueParameter); } } /// <summary> /// Retrieves the set of SqlParameters appropriate for the stored procedure /// </summary> /// <param name="connection">A valid SqlConnection object</param> /// <param name="spName">The name of the stored procedure</param> /// <param name="includeReturnValueParameter">A bool value indicating whether the return value parameter should be included in the results</param> /// <returns>An array of SqlParameters</returns> private static SqlParameter[] GetSpParameterSetInternal(SqlConnection connection, string spName, bool includeReturnValueParameter) { if (connection == null) throw new ArgumentNullException("connection"); if (spName == null || spName.Length == 0) throw new ArgumentNullException("spName"); string hashKey = connection.ConnectionString + ":" + spName + (includeReturnValueParameter ? ":include ReturnValue Parameter" : ""); SqlParameter[] cachedParameters; cachedParameters = paramCache[hashKey] as SqlParameter[]; if (cachedParameters == null) { SqlParameter[] spParameters = DiscoverSpParameterSet(connection, spName, includeReturnValueParameter); paramCache[hashKey] = spParameters; cachedParameters = spParameters; } return CloneParameters(cachedParameters); } #endregion Parameter Discovery Functions } }