public MainPageViewModel(
            INavigationService navigationService,
            IWpfInteractionService wpfInteractionService,
            IViewModeService viewModeService
            )
            : base(navigationService, viewModeService)
        {
            Title = "UWP アプリ Main Page";
            WpfInteractionService = wpfInteractionService;

            LaunchCommand = new DelegateCommand(async() =>
            {
                WpfInteractionService.LaunchWpfApp();

                await System.Threading.Tasks.Task.Delay(500);

                viewModeService.ExitFullScreenMode();
            }, () => true);
        }
 public ViewModelBase(INavigationService navigationService, IViewModeService viewModeService)
 {
     NavigationService = navigationService;
     ViewModeService   = viewModeService;
 }