使用Windows Phone 8.1中的文件选择器选择的图像

Question

I want to workk with an image picked by file picker in windows phone 8.1.I picked an image using this code

  private async void gallery_Tapped(object sender, TappedRoutedEventArgs e)
    {
        FileOpenPicker openPicker = new FileOpenPicker();
        openPicker.ViewMode = PickerViewMode.Thumbnail;
        openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
        openPicker.FileTypeFilter.Add(".jpg");
        openPicker.FileTypeFilter.Add(".jpeg");
        openPicker.FileTypeFilter.Add(".png");

        // Launch file open picker and caller app is suspended and may be terminated if required
        openPicker.PickSingleFileAndContinue();
   }


 public async void ContinueFileOpenPicker(FileOpenPickerContinuationEventArgs args)
        {
            if (args.Files.Count > 0)
            {
                StorageFile file=args.Files[0];

                IRandomAccessStream fileStream = await                     file.OpenAsync(Windows.Storage.FileAccessMode.Read);
                BitmapImage bitmapImage = new BitmapImage();

                bitmapImage.SetSource(fileStream);
                MyImage.Source=bitmapImage;

  }
            else
            {

            }
}

ContinueFileOpenPicker not executing I tried this but unable to understand that.Can any here guide me step by step what should I do to make it work.Thanks

Answer 1

 protected override void OnActivated(IActivatedEventArgs args)
        {
            var root = Window.Current.Content as Frame;
            var mainPage = root.Content as MainPage;
            if (mainPage != null && args is FileOpenPickerContinuationEventArgs)
            {
                mainPage.ContinueFileOpenPicker(args as FileOpenPickerContinuationEventArgs);
            }
        }

Put this code in app.xaml.cs it will work..