public MainWindow()
 {
     InitializeComponent();
     App.MainWindow = this;
     NavigationServiceSingleton.CreateNavigationService(MainFrame);
     NavigationServiceSingleton.GetNavigationService().NavigateToPage(new GamePage());
 }
 public MainWindow()
 {
     InitializeComponent();
     NavigationServiceSingleton.CreateNavigationService(MainFrame);
 }