private void BrowserControl_LoadCompleted(object sender, System.Windows.Navigation.NavigationEventArgs e)
 {
     BrowserControl.InvokeScript("eval", "window.onerror=function(){return true}");
     try
     {
         if (clear)
         {
             clear = false;
             BrowserControl.InvokeScript("eval", "localStorage.clear()");
         }
         var o = BrowserControl.InvokeScript("eval", "localStorage.getItem('token')");
         if (o != DBNull.Value)
         {
             aliyundrive.token.SetToken(o.ToString());
             Close();
         }
         Console.WriteLine("内容:{0}", o);
     }
     catch (Exception ex)
     {
         Console.WriteLine("错误:{0}", ex.Message);
     }
 }