怎么在web.config里写sql server连接字符串？.txt

学习积累的代码段

<appSettings>
   <add key="SqlConnectionString" value="Data Sour=(local);Uid=sa;PassWord=sa;DataBase=Pubs"></add>
</appSettings>

但是，还有两句话

using System.Configuration;
Public sting SqlConnectionString=ConfigurationSettings.AppSettings["SqlConnectionString"].ToSting();