reddvid

private void OnNavigated(object sender, NavigationEventArgs e)
{
  // Each time a navigation event occurs, update the Back button's visibility
  SystemNavigationManager.GetForCurrentView ().AppViewBackButtonVisibility =
  ((Frame)sender).CanGoBack ?
  AppViewBackButtonVisibility.Visible :
  AppViewBackButtonVisibility.Collapsed;
}

private void RootFrame_PointerPressed(object sender, PointerRoutedEventArgs e)

reddvid

rootFrame.PointerPressed += RootFrame_PointerPressed;
SystemNavigationManager.GetForCurrentView().BackRequested += OnBackRequested;

// Optional code to show back button on title bar
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility =
rootFrame.CanGoBack ?
AppViewBackButtonVisibility.Visible :
AppViewBackButtonVisibility.Collapsed;

reddvid

...

if (rootFrame == null)
{
  // Create a Frame to act as the navigation context and navigate to the first page  
  rootFrame = new Frame();

  rootFrame.NavigationFailed += OnNavigationFailed;
  rootFrame.Navigated += OnNavigated;