https://learn.microsoft.com/en-us/uwp/api/windows.ui.xaml.controls.control.xyfocusup?view=winrt-28000
Control.XYFocusUp Property (Windows.UI.Xaml.Controls) - Windows apps | Microsoft Learn
Gets or sets the object that gets focus when a user presses the Directional Pad (D-pad) up.
controlpropertywindowsuixaml