Question

我正在使用Microsoft.Bcl.Async NuGet包。在VS 2012 Pro上工作。

即使在NewProgressBar可见之后，也不会显示进度条。

 private async void Button_Click(object sender, RoutedEventArgs e)
 {
      NewProgressBar.Visibility = Visibility.Visible;
      CloudResponse res = await WebService.Instance.MailMessage();
      NewProgressBar.Visibility = Visibility.Collapsed;

      if (res.success == 1)
           MessageBox.Show("Message sent succesfully");
      else if (!res.errorMessage.IsEmpty())
           MessageBox.Show(res.errorMessage);
 }

Answer 1

确保进度条的IsEnabled和IsIndeterminate属性为真。

你也可以从

获得帮助

http://social.msdn.microsoft.com/Forums/wpapps/en-US/b9755315-dd90-42f3-87be-0994415e8795/windows-phone-performance-progress-bar-not-getting-visible?forum=wpdevelop

Windows Phone：未显示PerformanceProgressBar

1 个答案: