SqlConnection连SQL数据库通过web.config获取数据源

using System;


using System.Data;


using System.Data.SqlClient;


using System.Configuration;




namespace simx




...{


public class lj:System.Web.UI.Page




...{


private void Page_Load(object sender,System.EventArgs e)




...{


if(!Page.IsPostBack)




...{


getdata();


}


}




private void InitializeComponent()




...{




}




private void getdata()




...{


string sqlconn=ConfigurationSettings.AppSettings["CONN_STRING"];


SqlConnection conn=new SqlConnection(sqlconn);


conn.Open();


}


}


}






//web.config文件


<appSettings>


<add key="CONN_STRING" value="Server=(lIP地址);User id=用户名;Pwd=密码;Database=数据库"></add>


</appSettings>