private async void InkPresenter_StrokesCollected(InkPresenter sender, InkStrokesCollectedEventArgs args)
 {
     try
     {
         InputReady?.Invoke(this, await MnistHelper.GetHandWrittenImageAsync(inkGrid));
     }
     catch (Exception ex)
     {
         PageService?.ShowNotification(ex.Message);
     }
 }
 private async void InkPresenter_StrokesCollected(InkPresenter sender, InkStrokesCollectedEventArgs args)
 {
     InputReady?.Invoke(this, await MnistHelper.GetHandWrittenImageAsync(inkGrid));
 }