public MainPage()
        {
            InitializeComponent();
            var dnnService = new DnnService();

            MyLabel.Text = "Content Library : " + dnnService.GetVersion().Version;
        }
        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used such as when the application is launched to open a specific file.
        /// </summary>
        /// <param name="e">Details about the launch request and process.</param>
        protected override async void OnLaunched(LaunchActivatedEventArgs e)
        {
#if DEBUG
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // this.DebugSettings.EnableFrameRateCounter = true;
            }
#endif
            Frame rootFrame = Windows.UI.Xaml.Window.Current.Content as Frame;

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

                rootFrame.NavigationFailed += OnNavigationFailed;

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

                // Place the frame in the current Window
                Windows.UI.Xaml.Window.Current.Content = rootFrame;
            }

            if (e.PrelaunchActivated == false)
            {
                if (rootFrame.Content == null)
                {
                    var  service      = new DnnService();
                    bool isAuthorized = await service.Authorize();

#if DEBUG && NETFX_CORE
                    Type page = typeof(MainPage);
#else
                    Type page = isAuthorized ? typeof(MainPage) : typeof(UnauthorizedPage);
#endif

                    // When the navigation stack isn't restored navigate to the first page,
                    // configuring the new page by passing required information as a navigation
                    // parameter
                    rootFrame.Navigate(page, e.Arguments);
                }
                // Ensure the current window is active
                Windows.UI.Xaml.Window.Current.Activate();
            }
        }