Microsoft Band SDK - Navigation Issues

gistfile1.cs

// The code that shows the confirmation popup/page

  public async Task<Boolean> GetAddTileConsentAsync(BandTile tile, CancellationToken token)
  {
      Boolean flag;
      CoreApplicationView mainView = CoreApplication.MainView;
      if (mainView != null)
      {
          CoreWindow coreWindow = mainView.CoreWindow;
          if (coreWindow != null)
          {
              TaskCompletionSource<Boolean> taskCompletionSource = null;
              ConfiguredTaskAwaitable configuredTaskAwaitable = coreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => {
                  token.ThrowIfCancellationRequested();
                  Window current = Window.Current;
                  if (current != null)
                  {
                      Frame content = current.Content as Frame;
                      if (content != null)
                      {
                          taskCompletionSource = new TaskCompletionSource<Boolean>();
                          content.Navigate(typeof(T), new AddTileViewModel(tile, taskCompletionSource));
                      }
                  }
              }).AsTask().ConfigureAwait(false);
              await configuredTaskAwaitable;
              if (taskCompletionSource != null)
              {
                  flag = await taskCompletionSource.get_Task().ConfigureAwait(false);
                  return flag;
              }
          }
      }
      flag = false;
      return flag;
  }
        
        
// the code that handles the user's response
        
  if (base.Frame.CanGoBack)
  {
      base.Frame.GoBack();
  }