public AppShell()
        {
            this.InitializeComponent();
            this.Loaded += (sender, args) =>
            {
                Current = this;

                this.TogglePaneButton.Focus(FocusState.Programmatic);
            };

            SystemNavigationManager.GetForCurrentView().BackRequested += SystemNavigationManager_BackRequested;
            this.LoadMenu();
        }
        protected override void OnLaunched(LaunchActivatedEventArgs e)
        {
            #if DEBUG
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // This just gets in the way.
                //this.DebugSettings.EnableFrameRateCounter = true;
            }
            #endif

            AppShell shell = Window.Current.Content as AppShell;

            // Do not repeat app initialization when the Window already has content,
            // just ensure that the window is active
            if (shell == null)
            {
                // Create a AppShell to act as the navigation context and navigate to the first page
                shell = new AppShell();

                // Set the default language
                shell.Language = Windows.Globalization.ApplicationLanguages.Languages[0];

                shell.AppFrame.NavigationFailed += OnNavigationFailed;

                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    //TODO: Load state from previously suspended application
                }
            }

            // Place our app shell in the current Window
            Window.Current.Content = shell;

            if (shell.AppFrame.Content == null)
            {
                // When the navigation stack isn't restored, navigate to the first page
                // suppressing the initial entrance animation.
                shell.AppFrame.Navigate(typeof(AppShell), e.Arguments, new Windows.UI.Xaml.Media.Animation.SuppressNavigationTransitionInfo());
            }

            // Ensure the current window is active
            Window.Current.Activate();
        }