BrickPiExample.App.RootFrame_Navigated C# (CSharp) Method

        private void RootFrame_Navigated(object sender, NavigationEventArgs e)
        {
            Frame rootFrame = Window.Current.Content as Frame;
            SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility
                = rootFrame.CanGoBack ? AppViewBackButtonVisibility.Visible :
                                        AppViewBackButtonVisibility.Collapsed;
        }