asp.net web 开发中配置web.config

一、配置数据库连接字符串

 <connectionStrings>

    <add name="CaoLPractise" connectionString="server=.;uid=sa;pwd=123456;database=CaoL.TJ.TreeShow"/>

  </connectionStrings>

　　

 string conString = ConfigurationManager.ConnectionStrings["CaoLPractise"].ConnectionString;