Prevent page screen scrolling on keyboard open (C # -XAML-Windows Store app)

Usually, when TextBox

focusing, the soft keyboard will open, but the problem is that by default, the page shift is up when the keyboard is opened, and it shifts back to the previous position when the user closes the keyboard by pressing the screen.

I need the page to switch to a specific Y. And I need to close the keyboard when I press the Done button, not only when I tap the screen.

I'm trying to find the default ScrollViewer

page that scrolls: Two events in a TextBox:

private void PNotesTextBox_GotFocus(object sender, RoutedEventArgs e)
{
    var parentScrollViewer = FindParent<ScrollViewer>(this);
    parentScrollViewer.VerticalScrollMode = ScrollMode.Enabled;
    parentScrollViewer.ChangeView(null, offset, null, true);
    parentScrollViewer.UpdateLayout();
}

private void PNotesTextBox_Tapped(object sender, TappedRoutedEventArgs e)
{
        offset = e.GetPosition(PNotesTextBox).Y - 10;
}

      

        
        
        
      

    

In the MainPage constructor:

    var inputPane = InputPane.GetForCurrentView();
    inputPane.Showing += OnShowingInputPane;


    private async void OnShowingInputPane(InputPane sender, InputPaneVisibilityEventArgs args)
       {
           await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
           {
              var parentScrollViewer = FindParent<ScrollViewer>(this);
              parentScrollViewer.VerticalScrollMode = ScrollMode.Enabled;
              offset = 580 - args.OccludedRect.Top;
              parentScrollViewer.ChangeView(null, offset, null, true);
              parentScrollViewer.UpdateLayout();
            });
       }

public static T FindParent<T>(FrameworkElement reference)
   where T : FrameworkElement
   {
       FrameworkElement parent = reference;
       while (parent != null)
       {
           parent = parent.Parent as FrameworkElement;

           var rc = parent as T;
           if (rc != null)
           {
              return rc;
           }
       }
       return null;
    }

      

        
        
        
      

    

When I deploy my app to the simulator with 10.6" 1024x768 (4:3 100%)

and 10.6" 1366x768 (16:9 100%)

, it works great and the keyboard is shown in such a way that the ScrollViewer scrolls with the TextBox in the correct position, for those two resolutions only.

The problem is, I have to make it work the same on all screen resolutions. Any help how can I make my code dynamic for all screen sizes?