1.使用SqlConnection对象:
1 public void SqlConnectionOpen()
2 {
3 SqlConnection conn= new SqlConnection();
4 conn.ConnectionString = "user id=sa;password=;initial catalog=northwind;datasource=localhost;connect Timeout=20";
5 conn.Open();
6 }
7
2.使用OleDbConnection对象:2 {
3 SqlConnection conn= new SqlConnection();
4 conn.ConnectionString = "user id=sa;password=;initial catalog=northwind;datasource=localhost;connect Timeout=20";
5 conn.Open();
6 }
7
1 public void OleDBConnectionOpen()
2 {
3 OleDBConnection conn = new OleDbconnection();
4 conn.ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:\Customer.mdb";
5 conn.Open();
6 }
7
2 {
3 OleDBConnection conn = new OleDbconnection();
4 conn.ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:\Customer.mdb";
5 conn.Open();
6 }
7
(二)其它:
1.ODBC连接Access本地数据库
conGoodDay.Open("Driver={Microsoft Access Driver(*.mdb)};"+"Dbq=C:\a.mdb;"+
"Uid=Admin;"+"Pwd=;");
2.ODBC连接Access系统数据库
conGoodDay.Open("Driver={Microsoft Access Driver(*.mdb)};"+"Dbq=C:\a.mdb;"+
"SystemDB=Admin;"+"Pwd=;");
3.ODBC连接Access系统数据库
conGoodDay.Open("Driver={Microsoft Access Driver(*.mdb)};"+"Dbq=\\server\share\a.mdb;");
4.ODBC连接Excel系统数据库
conGoodDay.Open("Driver={Microsoft Access Driver(*.xls)};"+"DriverId=790;"+
"Dbq=C:\a.xls;"+"DefaultDir=c:\somepath;");
5.ODBC连接Oracle系统数据库
conGoodDay.Open("Driver={Microsoft ODBC for Oracle};"+"Server=OracleServer.world;"+
"Uid=Admin;"+"Pwd=password;");
6.ODBC连接Sql Servr
conGoodDay.Open("Driver={Sql Server};"+"Server=myServer;"+"Database=myDatabaseName;"
"Uid=Admin;"+"Pwd=password;");
7.ODBC连接Visual FoxPro
conGoodDay.Open("Driver={Microsoft Visual FoxPro Driver};"+
"SourceType=DBC;"+"SourceDB=c:a.dbc;"+"Exclusive=No;");