以编程方式添加ProgressBar winRT

Question

我已经创建了metro应用程序，我已经为我的视图创建了视图基础

public class ViewBase : Page,IView
    {
        public object Parameter { get; private set; }
        private ProgressBar _progressRing;

        public ViewBase()
        {
            Parameter = null;
            _progressRing = new ProgressBar
            {
                IsIndeterminate = true,
                Height = 25,
                Width = 100,
                FlowDirection = FlowDirection.LeftToRight,
                Foreground = new SolidColorBrush(Colors.Blue),
                HorizontalAlignment = HorizontalAlignment.Center,
                VerticalAlignment = VerticalAlignment.Top,
                Margin = new Thickness(0,12,0,0)
            };
        }

        public ViewBase(object parameter)
        {
            Parameter = parameter;
            _progressRing = new ProgressBar
            {
                IsIndeterminate = true,
                Height = 25,
                Width = 100,
                FlowDirection = FlowDirection.LeftToRight,
                Foreground = new SolidColorBrush(Colors.Blue),
                HorizontalAlignment = HorizontalAlignment.Center,
                VerticalAlignment = VerticalAlignment.Top,
                Margin = new Thickness(0, 12, 0, 0)
            };
        }

        #region Properties

        public virtual string Title
        {
            get { return ""; }
        }

        #endregion

        #region IView

        public async void DisplayMessage(MessageHandler handler)
        {
            await MessageBoxHelper.ShowAsync(handler);
        }


        public void SetAsBusy()
        {
            _progressRing.Visibility = Visibility.Visible;
            Frame.IsEnabled = false;
        }

        public void SetAsIdle()
        {
            _progressRing.Visibility=Visibility.Collapsed;
            Frame.IsEnabled = true;
        }

        #endregion
    }
}

所以现在我需要的是每当我的观看电话SetAsBusy()时，我需要展示我的progressBar。但似乎我无法添加它。 WinRT API不存在Frame.AddChild()。那我该怎么做？我可以在我的所有视图中手动添加进度条，但它会得到太多

Answer 1

“这意味着我需要在我的所有视图中添加它？我需要在我的视图库中执行此操作，因此我不会重新创建所有的ProgressBar”

默认是的。你可以做的是在你的常规框架周围有一个“shell”页面，而不是设置你的导航与那个内框架交互。