Web.config配置错误

Question

String str = System.Configuration.ConfigurationSettings.AppSettings["con"];上面的System出下面的错警告 2 “System.Configuration.ConfigurationSettings.AppSettings”已过时:“This method is obsolete, it has been replaced by System.Configuration!System.Configuration.ConfigurationManager.AppSettings"  <appSettings>
    <add key="con" value="server=192.168.1.102;database=blog;uid=blog;pwd=123"/>
  </appSettings>

Answer 1

String str = System.Configuration.ConfigurationManager.ConnectionStrings["con"].ConnectionString;