sqlConnection连接SQLServer字符串

 配置web.config:

 

<appSettings>
    一种：<!--add key="CONN_STRING" value="Server=(local);User id=sa;Pwd=;Database=Northwind"/-->
    另一种：<add key="CONN_STRING" value="Data Source=127.0.0.1;Initial Catalog=Northwind;Integrated Security=True"/>
  </appSettings>

 

 

.cs后台代码：

 

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