System.Configuration.ConfigurationManager.AppSettings["connString"];

在.net1.1 string strConnection = System.Configuration.ConfigurationSettings.AppSettings["connString"]; 在.net2.0 VS2005提示 警告: “System.Configuration.ConfigurationSettings.AppSettings”已過時:“This method is obsolete, it has been replaced by System.Configuration!

 解決方法 string strConnection = System.Configuration.ConfigurationManager.AppSettings["connString"];

對應的web.config設置爲：

<appSettings>
    <add key ="connString" value ="server=(local);uid=sa;pwd=sa;database=testDataBase;"/>
  </appSettings>

另一種方法是：

        ConnectionStringSettings cs = ConfigurationManager.ConnectionStrings["hello"];
        string cn = cs.ConnectionString;

對應的web.config設置爲：

 <connectionStrings>
  <add name ="hello" connectionString ="server=(local);uid=sa;pwd=sa;database=testDataBase" providerName ="System.Data.SqlClient"/> 
</connectionStrings>