asp.net获取数据库的连接字符串

1.添加引用

using System.Configuration;

　　

2.代码

string strConnectionString=ConfigurationManager.AppSettings["LocalConnectionString"].ToString()

　　

3.web.config文件

<configuration>
  <appSettings>
    <add key="LocalConnectionString" value="User id=sa;Password=123456;Database=Users;Server=192.168.1.1;Connect Timeout=50;Max Pool size=200;Mi     n pool Size=5"/>
  </appSettings>
</configuration>