public MainPage() { this.InitializeComponent(); data.LoadKey(); var reg = new lightbard.Class.ClientData(); tokens = data.getToken(); nameChange(); //this.testFrame.Navigate(typeof(Pages.HomeFrame)); this.testFrame.Navigate(typeof(Pages.MainFrame)); SystemNavigationManager.GetForCurrentView().BackRequested += (_, args) => { if (testFrame.CanGoBack) { testFrame.GoBack(); args.Handled = true; } };/**/ //UpdateBackButtonState(); }