maybe?
https://docs.microsoft.com/en-us/windows/uwp/design/devices/designing-for-tv
*When neither the
KeyDown nor
KeyUp events for the B button are handled by the app, the
SystemNavigationManager.BackRequested event will be fired, which should result in back navigation within the app. However, you have to implement this yourself, as in the following code snippet:
// This code goes in the MainPage class
public MainPage()
{
this.InitializeComponent();
// Handling Page Back navigation behaviors
SystemNavigationManager.GetForCurrentView().BackRequested +=
SystemNavigationManager_BackRequested;
}
private void SystemNavigationManager_BackRequested(
object sender,
BackRequestedEventArgs e)
{
if (!e.Handled)
{
e.Handled = this.BackRequested();
}
}
public Frame AppFrame { get { return this.Frame; } }
private bool BackRequested()
{
// Get a hold of the current frame so that we can inspect the app back stack
if (this.AppFrame == null)
return false;
// Check to see if this is the top-most page on the app back stack
if (this.AppFrame.CanGoBack)
{
// If not, set the event to handled and go back to the previous page in the
// app.
this.AppFrame.GoBack();
return true;
}
return false;
}
Note
If the B button is used to go back, then don't show a back button in the UI. If you're using a
Navigation view, the back button will be hidden automatically. For more information about backwards navigation, see
Navigation history and backwards navigation for UWP apps.
