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在.net2.0 VS2005提示 警告: “System.Configuration.ConfigurationSettings.AppSettings”已过时:“This method is obsolete, it has been replaced by System.Configuration!

解决方法 string strConnection = System.Configuration.ConfigurationManager.AppSettings["connString"];

对应的web.config设置为：

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

另一种方法是：

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

对应的web.config设置为：

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