本文介绍了C#连接常用数据库的常用方法,供大家进行设计数据库程序时参考。
(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;");
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