asp.net数据库连接字符串集合

(一)常用连接:
1.使用SqlConnection对象:

public void SqlConnectionOpen() 
 
{ 
 
   SqlConnection conn= new SqlConnection(); 
 
   conn.ConnectionString = "user id=sa;password=;initial catalog=northwind;datasource=localhost;connect Timeout=20"; 
 
   conn.Open(); 
 
} 
 
2.使用OleDbConnection对象: 
 
public void OleDBConnectionOpen() 
 
{ 
 
   OleDBConnection conn = new OleDbconnection(); 
 
   conn.ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;DataSource=C:/Customer.mdb"; 
 
   conn.Open(); 
 
}

(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;");