.Net在web.config中配置数据库链接

在web.config中数据库链接 

<connectionStrings>
    <add name="ConnectionString" connectionString="server=.;uid=sa;pwd=123;database=OurWeb"/>
  </connectionStrings>

1.添加System.Configuration.dll
2.引用using System.Configuration
3.获取链接
string conSQL = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;