using System; using System.Collections; using System.Collections.Generic; using System.Data; using System.Data.SqlClient; using System.IO; using System.Reflection; using System.Runtime.Serialization.Formatters.Binary; using System.Xml; namespace Test_DBUtility { /// <summary> /// 数据库访问抽象基类 (基于MS-SQLServer2005或以上版本) /// 此类为抽象类 abstract ，不允许实例化，在应用时直接调用即可 /// Autho ：zhouzhilong /// version ：1.2 /// LastEditTime：2010-10-09 /// </summary> public abstract class SqlHelper { //数据库连接字符串(web.config来配置)，可以动态更改connectionString支持多数据库. public static readonly string LocalSqlServer = System.Configuration.ConfigurationManager.AppSettings["ConnectionString"].ToString(); #region ===========通用分页存储过程=========== /// <summary> /// 通用分页存储过程 /// </summary> /// <param name="connectionString">连接</param> /// <param name="tblName">要显示的表或多个表的连接</param> /// <param name="strGetFields"> 需要返回的列</param> /// <param name="fldName">排序的字段名</param> /// <param name="PageSize">页尺寸</param> /// <param name="PageIndex">页码</param> /// <param name="doCount">返回记录总数, 非 0 值则返回</param> /// <param name="OrderType">1降序 ,0 升序，其他 多字段order 条件</param> /// <param name="strWhere">查询条件 (注意: 不要加 WHERE)</param> /// <returns>查询当前页的数据集</returns> public static DataSet PageList(string connectionString, string tblName, string strGetFields, string fldName , int PageSize, int PageIndex, int doCount, int OrderType, string strWhere) { SqlParameter[] parameters ={ new SqlParameter("@tblName",SqlDbType.NVarChar,255), new SqlParameter("@strGetFields",SqlDbType.NVarChar,1000), new SqlParameter("@fldName",SqlDbType.NVarChar,255), new SqlParameter("@PageSize",SqlDbType.Int), new SqlParameter("@PageIndex",SqlDbType.Int), new SqlParameter("@doCount",SqlDbType.Bit), new SqlParameter("@OrderType",SqlDbType.Int), //new SqlParameter("@strWhere",SqlDbType.NVarChar,1500)}; new SqlParameter("@strWhere",SqlDbType.VarChar,8000)}; parameters[0].Value = tblName; parameters[1].Value = (strGetFields == null) ? "*" : strGetFields; parameters[2].Value = (fldName == null) ? "" : fldName; parameters[3].Value = PageSize; parameters[4].Value = PageIndex; parameters[5].Value = doCount; parameters[6].Value = OrderType; parameters[7].Value = (strWhere == null) ? "" : strWhere; DataSet ds = RunProcedureDS(connectionString, "PageList", parameters, "PageListTable"); return ds; } #endregion #region ===========执行简单SQL语句============ /// <summary> /// 获取表某个字段的最大值 /// </summary> /// <param name="FieldName"></param> /// <param name="TableName"></param> /// <returns></returns> public static int GetMaxID(string connectionString, string FieldName, string TableName) { string strSql = "select max(" + FieldName + ") from " + TableName; DataSet ds = ExecuteDataSet(connectionString, strSql); if (ds.Tables[0].Rows[0][0] != DBNull.Value) { return int.Parse(ds.Tables[0].Rows[0][0].ToString()); } else { return 0; } } /// <summary> /// 检测一个记录是否存在(SqlParameter语句方式) /// </summary> /// <param name="strSql"></param> /// <param name="cmdParms"></param> /// <returns></returns> public static bool ExistsRecord(string connectionString, string strSql, params SqlParameter[] cmdParms) { DataSet ds = RunProcedureDS(connectionString, strSql, cmdParms); return int.Parse(ds.Tables[0].Rows[0][0].ToString()) > 0; } /// <summary> ///执行查询，并将查询返回的结果集中第一行的第一列作为 .NET Framework 数据类型返回。忽略额外的列或行。返回查询结果（object）。 /// </summary> /// <param name="SQLString">计算查询结果语句</param> /// <returns>查询结果（object）</returns> public static object GetSingle(string connectionString, string SQLString) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); object obj = cmd.ExecuteScalar(); if ((Object.Equals(obj, null)) || (Object.Equals(obj, System.DBNull.Value))) { return null; } else { return obj; } } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw new Exception(e.Message); } } } } #endregion 执行简单SQL语句 #region StrSQL执行结果，返回执行后受影响的行数 /*【公告】：ExecuteNonQuery()方法介绍 *对于 UPDATE、INSERT 和 DELETE 语句， *返回值为该命令所影响的行数。对于所有其他类型的语句， *返回值为 -1。如果发生回滚，返回值也为 -1。 */ /// <summary> /// 执行SQL语句，返回影响的记录数，select类型的语句此方法不可行。 /// 对于select方法应该通过Dataset.Tables[0].Rows.Count来判断 /// </summary> /// <param name="SQLString">SQL语句</param> /// <returns>影响的记录数</returns> public static int ExecuteSql(string connectionString, string SQLString) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (System.Data.SqlClient.SqlException E) { connection.Close(); throw new Exception(E.Message); } } } } /// <summary> /// 方法重载，限定查询时间，返回影响的记录数 /// 客观的多并发查询时，可限制用户查询时间，以免对服务器增加负担 /// </summary> /// <param name="Times">等待命令执行的时间，默认值为 30 秒。</param> /// <returns>影响的记录数</returns> public static int ExecuteSql(string connectionString, string SQLstring, int Times) { using (SqlConnection conntion = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLstring, conntion)) { try { conntion.Open(); cmd.CommandTimeout = Times;//默认值为 30 秒 int rows = cmd.ExecuteNonQuery(); return rows; } catch (System.Data.SqlClient.SqlException e) { conntion.Close(); throw e; } } } } /// <summary> /// 执行SQL语句，返回记录的条数【注意是记录数】； /// 获取SQL字段第一行第一字段的数值，请不要用select /// </summary> /// <param name="SQLString">SQL语句</param> /// <returns>影响的记录数</returns> public static int ExecuteCountSql(string connectionString, string SQLString) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand(SQLString, connection)) { try { connection.Open(); SqlDataReader dr = cmd.ExecuteReader(); dr.Read(); int count = int.Parse(dr[0].ToString()); return count; } catch (System.Data.SqlClient.SqlException E) { connection.Close(); throw new Exception(E.Message); } } } } /// <summary> /// 执行带一个存储过程参数的的SQL语句。 /// </summary> /// <param name="SQLString">SQL语句</param> /// <param name="content">参数内容,比如一个字段是格式复杂的文章，有特殊符号，可以通过这个方式添加</param> /// <returns>影响的记录数</returns> public static int ExecuteSql(string connectionString, string SQLString, string content) { using (SqlConnection connection = new SqlConnection(connectionString)) { SqlCommand cmd = new SqlCommand(SQLString, connection); SqlParameter myParameter = new SqlParameter("@content", SqlDbType.NText); myParameter.Value = content; cmd.Parameters.Add(myParameter); try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (SqlException E) { throw new Exception(E.Message); } finally { cmd.Dispose(); } } } /// <summary> /// 向数据库里插入图像格式的字段(和上面情况类似的另一种实例) /// </summary> /// <param name="strSQL">SQL语句</param> /// <param name="fs">图像字节,数据库的字段类型为image的情况</param> /// <returns>影响的记录数</returns> public static int ExecuteSqlInsertImg(string connectionString, string strSQL, byte[] fs) { using (SqlConnection connection = new SqlConnection(connectionString)) { SqlCommand cmd = new SqlCommand(strSQL, connection); SqlParameter myParameter = new SqlParameter("@fs", SqlDbType.Image); myParameter.Value = fs; cmd.Parameters.Add(myParameter); try { connection.Open(); int rows = cmd.ExecuteNonQuery(); return rows; } catch (SqlException E) { throw new Exception(E.Message); } finally { cmd.Dispose(); } } } /// <summary> /// 执行带参数的SQL语句，返回影响的记录数 /// </summary> /// <param name="connectionString">连接字符串</param> /// <param name="SQLString">SQL语句</param> /// <param name="cmdParms">参数</param> /// <returns>影响的记录数</returns> public static int ExecuteSql(string connectionString, string SQLString, params SqlParameter[] cmdParms) { using (SqlConnection connection = new SqlConnection(connectionString)) { using (SqlCommand cmd = new SqlCommand()) { try { PrepareCommand(cmd, connection, null, SQLString, cmdParms); int rows = cmd.ExecuteNonQuery(); cmd.Parameters.Clear(); return rows; } catch (System.Data.SqlClient.SqlException E) { connection.Close(); throw new Exception(E.Message); } } } } /// <summary> /// 执行存储过程，返回Return值【这个方法还没看明白，- - 】 /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <param name="rowsAffected">影响的行数</param> /// <returns></returns> public static int RunProcedure(string connectionString, string storedProcName, IDataParameter[] parameters, out int rowsAffected) { using (SqlConnection connection = new SqlConnection(connectionString)) { int result; connection.Open(); SqlCommand command = BuildIntCommand(connection, storedProcName, parameters); rowsAffected = command.ExecuteNonQuery(); result = (int)command.Parameters["ReturnValue"].Value; connection.Close(); return result; } } #endregion #region ============获取DataReader============ /*【公告】下面的方法调用(先实例化一个dr)该方法后， * 一定要对SqlDataReader进行Close (对实例化的dr进行 dr.Close(); * 如果不Close掉，则会保持read回话状态，加重数据库负荷) */ /// <summary> /// 执行查询语句，返回SqlDataReader /// </summary> /// <param name="strSQL">查询语句</param> /// <returns>SqlDataReader</returns> public static SqlDataReader ExecuteReader(string connectionString, string strSQL) { SqlConnection connection = new SqlConnection(connectionString); SqlCommand cmd = new SqlCommand(strSQL, connection); try { connection.Open(); SqlDataReader myReader = cmd.ExecuteReader(); return myReader; } catch (System.Data.SqlClient.SqlException e) { throw new Exception(e.Message); } finally { connection.Close(); } } /// <summary> /// 执行存储过程，返回SqlDataReader /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlDataReader</returns> public static SqlDataReader RunProcedureDR(string connectionString, string storedProcName, IDataParameter[] parameters) { SqlConnection connection = new SqlConnection(connectionString); SqlDataReader returnReader; try { connection.Open(); SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters); command.CommandType = CommandType.StoredProcedure; returnReader = command.ExecuteReader(CommandBehavior.CloseConnection); } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw new Exception(e.Message); } return returnReader; } #endregion #region =============获取DataSet============== /// <summary> /// 执行查询语句，返回DataSet /// </summary> /// <param name="SQLString">查询语句</param> /// <returns>DataSet</returns> public static DataSet ExecuteDataSet(string connectionString, string SQLString) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet ds = new DataSet(); try { connection.Open(); SqlDataAdapter command = new SqlDataAdapter(SQLString, connection); command.Fill(ds); } catch (SqlException ex) { connection.Close(); throw new Exception(ex.Message); } return ds; } } public static DataSet ExecuteDataSet(string connectionString, string strSQL, int Times) { using (SqlConnection conntion = new SqlConnection(connectionString)) { DataSet ds = new DataSet(); try { conntion.Open(); SqlDataAdapter da = new SqlDataAdapter(strSQL, conntion); da.SelectCommand.CommandTimeout = Times;//限制查询时间 da.Fill(ds); } catch (System.Data.SqlClient.SqlException e) { conntion.Close(); throw new Exception(e.Message); } return ds; } } /// <summary> /// 执行查询语句，返回DataSet /// </summary> /// <param name="SQLString">查询语句</param> /// <returns>DataSet</returns> /// BU层得到对象实体用这个方法 public static DataSet ExecuteDataSet(string connectionString, string SQLString, params SqlParameter[] cmdParms) { using (SqlConnection connection = new SqlConnection(connectionString)) { SqlCommand cmd = new SqlCommand(); PrepareCommand(cmd, connection, null, SQLString, cmdParms); using (SqlDataAdapter da = new SqlDataAdapter(cmd)) { DataSet ds = new DataSet(); try { da.Fill(ds); cmd.Parameters.Clear(); } catch (System.Data.SqlClient.SqlException ex) { throw new Exception(ex.Message); } return ds; } } } //【调用方法】： //ArrayList arrayList = new ArrayList(); //arrayList.Add("strsql1"); //arrayList.Add("strsql2"); //... //arrayList.Add("strsqln"); //return DbHelperSQL.ExecuteManySqlDS(arrayList); /// <summary> /// 执行多条SQL语句返回多个DataSet /// </summary> /// <param name="arrayList">arrayList对象集合</param> /// <returns>多个数据集</returns> public static DataSet ExecuteManySqlDS(string connectionString, ArrayList arrayList) { DataSet set = new DataSet(); using (SqlConnection connection = new SqlConnection(connectionString)) { SqlCommand command = new SqlCommand(); command.Connection = connection; string table = "table"; SqlDataAdapter adapter = new SqlDataAdapter(); for (int i = 0; i < arrayList.Count; ++i) { command.CommandText = arrayList[i].ToString(); adapter.SelectCommand = command; adapter.Fill(set, table + i);// table + i 每个语句返回数据集的表名 } return set; } } /// <summary> /// 执行存储过程返回DataSet /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <param name="tableName">DataSet结果中的表名</param> /// <returns>DataSet</returns> public static DataSet RunProcedureDS(string connectionString, string storedProcName, IDataParameter[] parameters) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet dataSet = new DataSet(); try { connection.Open(); SqlDataAdapter sqlDA = new SqlDataAdapter(); sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters); sqlDA.Fill(dataSet); } catch (System.Data.SqlClient.SqlException e) { connection.Close(); throw new Exception(e.Message); } return dataSet; } } public static DataSet RunProcedureDS(string connectionString, string storedProcName, IDataParameter[] parameters, string tableName) { using (SqlConnection connection = new SqlConnection(connectionString)) { DataSet dataSet = new DataSet(); connection.Open(); SqlDataAdapter sqlDA = new SqlDataAdapter(); sqlDA.SelectCommand = BuildQueryCommand(connection, storedProcName, parameters); sqlDA.Fill(dataSet, tableName); connection.Close(); return dataSet; } } #endregion #region ============数据库事务处理============ /// <summary> /// 执行多条SQL语句，实现数据库事务 /// </summary> /// <param name="SQLStringList">多条SQL语句</param> /// <returns>执行事务影响的行数</returns> public static int ExecuteSqlTran(string connectionString, List<String> SQLStringList) { using (SqlConnection conntion = new SqlConnection(connectionString)) { conntion.Open(); SqlCommand cmd = new SqlCommand(); cmd.Connection = conntion; SqlTransaction ts = conntion.BeginTransaction(); cmd.Transaction = ts; try { int count = 0; for (int n = 0; n < SQLStringList.Count; n++) { string strsql = SQLStringList[n]; if (strsql.Length > 1) { cmd.CommandText = strsql; count += cmd.ExecuteNonQuery(); } } ts.Commit();//提交数据库事务 return count; } catch { ts.Rollback(); return 0; } } } /// <summary> /// 执行多条SQL语句，实现数据库事务 /// </summary> /// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param> public static void ExecuteSqlTran(string connectionString, Hashtable SQLStringList) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlTransaction trans = conn.BeginTransaction()) { SqlCommand cmd = new SqlCommand(); try { //循环 foreach (DictionaryEntry myDY in SQLStringList) { string cmdText = myDY.Key.ToString(); SqlParameter[] parameter = (SqlParameter[])myDY.Value; PrepareCommand(cmd, conn, trans, cmdText, parameter); int result = cmd.ExecuteNonQuery(); //这里可以记录该事务的执行结果 cmd.Parameters.Clear(); } trans.Commit(); } catch { trans.Rollback(); throw; } } } } #endregion #region 创建 SqlCommand 对象及创建执行命令参数 /// <summary> /// 为执行命令准备参数 /// </summary> /// <param name="cmd">SqlCommand 命令</param> /// <param name="conn">已经存在的数据库连接</param> /// <param name="trans">数据库事物处理</param> /// <param name="cmdText">SQL语句</param> /// <param name="cmdparams">返回带参数的命令</param> public static void PrepareCommand(SqlCommand cmd, SqlConnection conn, SqlTransaction trans, string cmdText, SqlParameter[] cmdparams) { if (conn.State != ConnectionState.Open) {//判断数据库连接状态 conn.Open(); } cmd.Connection = conn; cmd.CommandText = cmdText; if (trans != null) {//判断是否需要事物处理 cmd.Transaction = trans; } cmd.CommandType = CommandType.Text; if (cmdparams != null) { foreach (SqlParameter parameter in cmdparams) { if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) && (parameter.Value == null)) { parameter.Value = DBNull.Value; } cmd.Parameters.Add(parameter); } } } /// <summary> /// 创建 SqlCommand 对象实例(用来返回一个整数值) /// </summary> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlCommand 对象实例</returns> private static SqlCommand BuildIntCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters) { SqlCommand command = BuildQueryCommand(connection, storedProcName, parameters); command.Parameters.Add(new SqlParameter("ReturnValue", SqlDbType.Int, 4, ParameterDirection.ReturnValue, false, 0, 0, string.Empty, DataRowVersion.Default, null)); return command; } /// <summary> /// 构建 SqlCommand 对象(用来返回一个结果集，而不是一个整数值) /// </summary> /// <param name="connection">数据库连接</param> /// <param name="storedProcName">存储过程名</param> /// <param name="parameters">存储过程参数</param> /// <returns>SqlCommand</returns> private static SqlCommand BuildQueryCommand(SqlConnection connection, string storedProcName, IDataParameter[] parameters) { SqlCommand command = new SqlCommand(storedProcName, connection); command.CommandType = CommandType.StoredProcedure; foreach (SqlParameter parameter in parameters) { if (parameter != null) { // 检查未分配值的输出参数,将其分配以DBNull.Value. if ((parameter.Direction == ParameterDirection.InputOutput || parameter.Direction == ParameterDirection.Input) && (parameter.Value == null)) { parameter.Value = DBNull.Value; } command.Parameters.Add(parameter); } } return command; } #endregion #region ============构造语句常用类============ /// <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); } public static SqlParameter MakeInParam(string ParamName, SqlDbType DbType, object Value) { return MakeParam(ParamName, DbType, 0, 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> /// 构建存储过程参数 /// </summary> /// <param name="ParamName">参数名</param> /// <param name="DbType">参数类型(枚举)</param> /// <param name="Size">参数大小</param> /// <param name="Direction">DataSet 的参数类型(枚举)</param> /// <param name="Value">设置该参数的数值</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 构造语句常用类 #region =============由Object取值============= /// <summary> /// 取得Int值 /// </summary> /// <param name="obj"></param> /// <returns></returns> public static int GetInt(object obj) { if (obj.ToString() != "") return int.Parse(obj.ToString()); else return 0; } /// <summary> /// 获得Long值 /// </summary> /// <param name="obj"></param> /// <returns></returns> public static long GetLong(object obj) { if (obj.ToString() != "") return long.Parse(obj.ToString()); else return 0; } /// <summary> /// 取得Decimal值 /// </summary> /// <param name="obj"></param> /// <returns></returns> public static decimal GetDecimal(object obj) { if (obj.ToString() != "") return decimal.Parse(obj.ToString()); else return 0; } /// <summary> /// 取得Guid值 /// </summary> /// <param name="obj"></param> /// <returns></returns> public static Guid GetGuid(object obj) { if (obj.ToString() != "") return new Guid(obj.ToString()); else return Guid.Empty; } /// <summary> /// 取得DateTime值 /// </summary> /// <param name="obj"></param> /// <returns></returns> public static DateTime GetDateTime(object obj) { if (obj.ToString() != "") return DateTime.Parse(obj.ToString()); else return DateTime.MinValue; } /// <summary> /// 取得bool值 /// </summary> /// <param name="obj"></param> /// <returns></returns> public static bool GetBool(object obj) { if (obj.ToString() == "1" || obj.ToString().ToLower() == "true") return true; else return false; } /// <summary> /// 取得byte[] /// </summary> /// <param name="obj"></param> /// <returns></returns> public static Byte[] GetByte(object obj) { if (obj.ToString() != "") { return (Byte[])obj; } else return null; } /// <summary> /// 取得string值 /// </summary> /// <param name="obj"></param> /// <returns></returns> public static string GetString(object obj) { return obj.ToString(); } #endregion #region ===========序列化与反序列化=========== /// <summary> /// 序列化对象 /// </summary> /// <param name="obj">要序列化的对象</param> /// <returns>返回二进制</returns> public static byte[] SerializeModel(Object obj) { if (obj != null) { BinaryFormatter binaryFormatter = new BinaryFormatter(); MemoryStream ms = new MemoryStream(); byte[] b; binaryFormatter.Serialize(ms, obj); ms.Position = 0; b = new Byte[ms.Length]; ms.Read(b, 0, b.Length); ms.Close(); return b; } else return new byte[0]; } /// <summary> /// 反序列化对象 /// </summary> /// <param name="b">要反序列化的二进制</param> /// <returns>返回对象</returns> public static object DeserializeModel(byte[] b, object SampleModel) { if (b == null || b.Length == 0) return SampleModel; else { object result = new object(); BinaryFormatter binaryFormatter = new BinaryFormatter(); MemoryStream ms = new MemoryStream(); try { ms.Write(b, 0, b.Length); ms.Position = 0; result = binaryFormatter.Deserialize(ms); ms.Close(); } catch { } return result; } } #endregion #region ==========Model与XML互相转换========== /// <summary> /// Model转化为XML的方法 /// </summary> /// <param name="model">要转化的Model</param> /// <returns></returns> public static string ModelToXML(object model) { XmlDocument xmldoc = new XmlDocument(); XmlElement ModelNode = xmldoc.CreateElement("Model"); xmldoc.AppendChild(ModelNode); if (model != null) { foreach (PropertyInfo property in model.GetType().GetProperties()) { XmlElement attribute = xmldoc.CreateElement(property.Name); if (property.GetValue(model, null) != null) attribute.InnerText = property.GetValue(model, null).ToString(); else attribute.InnerText = "[Null]"; ModelNode.AppendChild(attribute); } } return xmldoc.OuterXml; } /// <summary> /// XML转化为Model的方法 /// </summary> /// <param name="xml">要转化的XML</param> /// <param name="SampleModel">Model的实体示例，New一个出来即可</param> /// <returns></returns> public static object XMLToModel(string xml, object SampleModel) { if (string.IsNullOrEmpty(xml)) return SampleModel; else { XmlDocument xmldoc = new XmlDocument(); xmldoc.LoadXml(xml); XmlNodeList attributes = xmldoc.SelectSingleNode("Model").ChildNodes; foreach (XmlNode node in attributes) { foreach (PropertyInfo property in SampleModel.GetType().GetProperties()) { if (node.Name == property.Name) { if (node.InnerText != "[Null]") { if (property.PropertyType == typeof(System.Guid)) property.SetValue(SampleModel, new Guid(node.InnerText), null); else property.SetValue(SampleModel, Convert.ChangeType(node.InnerText, property.PropertyType), null); } else property.SetValue(SampleModel, null, null); } } } return SampleModel; } } #endregion } }