private void OverlayTask(GoodsDownloadPauseEventArgs e)
 {
     try
     {
         int time = e.WaitSeconds;
         this.Dispatcher.BeginInvoke(new Action(() => this.overlay.Visibility = Visibility.Visible));
         while (time >= 0)
         {
             string msg = "检测到:淘宝返回操作过于频繁,将于:" + time + "秒后自动重试";
             this.Dispatcher.BeginInvoke(new Action(() => this.tbCount.Text = msg));
             Thread.Sleep(1000);
             time--;
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
     finally
     {
         this.Dispatcher.BeginInvoke(new Action(() => this.overlay.Visibility = Visibility.Collapsed));
         if (this.goodsDownloadWorker != null)
         {
             this.goodsDownloadWorker.GoOn();
         }
     }
 }
 private void GoodsDownloadWorker_Pausing(object sender, GoodsDownloadPauseEventArgs e)
 {
     if (e.Msg == "用户暂停")
     {
         return;
     }
     this.Dispatcher.BeginInvoke(new Action(() =>
     {
         if (e.IsVerify)
         {
             MessageBox.Show("登录超时需要登录验证,进行操作后点击继续");
         }
         else
         {
             Task.Factory.StartNew(new Action(() => OverlayTask(e)));
         }
     }));
 }