项目里用的是<authentication mode="Forms">
      <forms loginUrl="G001_login.aspx" protection="All" timeout="30"></forms>
</authentication><sessionState 
            mode="InProc"
            stateConnectionString="tcpip=127.0.0.1:42424"
            sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes"
            cookieless="false" 
            timeout="30" 
/>
超时以后为什么不自动跳转到登陆页面,而是显示 “the page cannot be displayed ....”