void appBarButtonReview_Click(object sender, EventArgs e)
        {
            MarketplaceReviewTask task = new MarketplaceReviewTask();
            task.Show();

            GenerateRandomCard();
        }

 static void yesButton_Click(object sender, RoutedEventArgs e)
 {
     var review = new MarketplaceReviewTask();
     review.Show();
     messagePrompt.Hide();
     DidReview();
 }

        public Feedback()
        {
            InitializeComponent();

            // Initialize the SaveRingtoneTask and assign the Completed handler in the page constructor.
            ReviewTask = new MarketplaceReviewTask();
        }

        /// <summary>
        /// Prompt the user for review
        /// </summary>
        public static void PromptUser()
        {
            Popup popup = new Popup();
            popup.VerticalOffset = App.Current.Host.Content.ActualHeight / 3;
            ReviewPopupControl review = new ReviewPopupControl();
            popup.Child = review;
            popup.IsOpen = true;

            review.btnOk.Click += (s, args) =>
                {
                    MarketplaceReviewTask task = new MarketplaceReviewTask();
                    task.Show();

                    popup.IsOpen = false;
                    DidReview();
                };

            review.btnNo.Click += (s, args) =>
                {
                    numOfRuns = -1;
                    popup.IsOpen = false;
                };

            review.btnNever.Click += (s, args) =>
                {
                    DidReview();
                    popup.IsOpen = false;
                };
        }

        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            base.OnNavigatedTo(e);
            //  NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));

            if (askforReview)
            {
                //make sure we only ask once! 
                var returnvalue = MessageBox.Show("Please tell us how is the app as your reveiws matter alot to us.\nPlease  Rate 5 Stars", "Please  Rate 5 Stars", MessageBoxButton.OK);
                if (returnvalue == MessageBoxResult.OK)
                {
                    IsolatedStorageSettings.ApplicationSettings["done"] = true;
                    askforReview = false;



                    var marketplaceReviewTask = new MarketplaceReviewTask();
                    marketplaceReviewTask.Show();
                }

                NavigationService.GoBack();

                }

                 else
                NavigationService.GoBack();

            }

        private void Evaluar() 
        {
            IsolatedStorageSettings configuracion = IsolatedStorageSettings.ApplicationSettings;
            IsolatedStorageSettings primeraVez = IsolatedStorageSettings.ApplicationSettings;


            if (!(bool)configuracion.Contains("evaluado") )
            {
                if ((bool)primeraVez.Contains("yes"))
                {
                    MessageBoxResult resultado = MessageBox.Show("¿Deseas evaluar esta aplicación?", "Evaluación", MessageBoxButton.OKCancel);

                    if (resultado == MessageBoxResult.OK)
                    {
                        MarketplaceReviewTask evaluacionApp = new MarketplaceReviewTask();
                        evaluacionApp.Show();
                        configuracion.Add("evaluado", true);

                    }
                }

                else
                {
                    primeraVez.Add("yes", false);

                }

            }

          

            
        }

        public Task<bool> ReviewApplicationOnTheStore()
        {
            var marketplaceReviewTask = new MarketplaceReviewTask();

            marketplaceReviewTask.Show();

            return Task.FromResult(true);
        }

        /// <summary>
        /// Rate and review the app
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ApplicationBarRateButton_Click(object sender, EventArgs e)
        {
            MarketplaceReviewTask task = new MarketplaceReviewTask();
            task.Show();

            // Dont prompt the user again
            ReviewBugger.DidReview();
        }

 public void RateApp()
 {
     config.AppRated = true;
     config.TimeUnrated = TimeSpan.Zero;
     App.CurrentApp.LogAnalyticEvent("RateApp");
     var marketplaceReviewTask = new MarketplaceReviewTask();
     marketplaceReviewTask.Show();
 }

        private void RateButton_Clicked(object sender, System.Windows.RoutedEventArgs e)
        {
            var mrt = new MarketplaceReviewTask();
            try {
                mrt.Show();
            } catch (Exception) {

            }
        }

 public void ShowAfterThreshold()
 {
     if (NumberOfStarts == numberOfStartsThreshold &&
         GetMessageBoxResult() == MessageBoxResult.OK)
     {
         MarketplaceReviewTask task = new MarketplaceReviewTask();
         task.Show();
     }
 }

 private void btn_about_Click(object sender, RoutedEventArgs e)
 {
     MessageBoxResult result = MessageBox.Show("     This Application calculates 300.000th digit of the pi number and saves time data to display the performance change of CPU  \n     Copyright (C) 2014 Kaan Barış BAYRAK  E-Mail: [email protected] \n     Special Thanks to Naz Levent for helping me to build the visual design \n     You can rate this app to help developer(ME) by just clicking OK button",
             "Super Pi Performance Tester", MessageBoxButton.OKCancel);
     if (result == MessageBoxResult.OK)
     {
         MarketplaceReviewTask marketplaceReviewTask = new MarketplaceReviewTask();
         marketplaceReviewTask.Show();
     }
 }

 private void Mark_Tap(object sender, System.Windows.Input.GestureEventArgs e)
 {
     try
     {
         MarketplaceReviewTask marketplaceReviewTask = new MarketplaceReviewTask();
         marketplaceReviewTask.Show();
     }
     catch (System.Exception ex)
     {
     }
 }

 private void HyperlinkButton_Click(object sender, RoutedEventArgs e)
 {
     var s = ((ButtonBase)sender).Tag as string;
     switch (s)
     {
         case "Review":
             var task = new MarketplaceReviewTask();
             task.Show();
             break;
     }
 }

 public void ratemyapp()
 {
     try
     {
         var rateTask = new MarketplaceReviewTask();
         rateTask.Show();
     }
     catch
     {
     }
 }

		public void OpenStoreForReview(MarketingDesc desc)
		{
			#if WINDOWS_PHONE
			var task = new MarketplaceReviewTask();
			task.Show();
			#elif UNITY_WP_8_1
			async_OpenStoreForReview(desc.WP8_AppID);
			#else
			async_OpenStoreForReview(desc.Win8_PackageFamilyName);
			#endif
		}

 private void btnRateAndReview_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         MarketplaceReviewTask marketplaceReviewTask = new MarketplaceReviewTask();
         marketplaceReviewTask.Show();
     }
     catch
     {
         MessageBox.Show("Could not open marketplace on phone...");
     }
 }

 private void RateReviewText_Tap(object sender, System.Windows.Input.GestureEventArgs e)
 {
     try
     {
         MarketplaceReviewTask marketplaceReviewTask = new MarketplaceReviewTask();
         marketplaceReviewTask.Show();
     }
     catch
     {
         MessageBox.Show("Marketplace cannot be reached and app cannot be found. Please try to review later - Thank you!");
     }
 }

 private void ReviewButton_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         MarketplaceReviewTask marketplaceReviewTask = new MarketplaceReviewTask();
         marketplaceReviewTask.Show();
     }
     catch (InvalidOperationException ex)
     {
         // user probably double-clicked the button before navigation occurred - do nothing
     }
 }

 private void rateButton_Click(object sender, RoutedEventArgs e)
 {
     try
     {
         MarketplaceReviewTask task = new MarketplaceReviewTask();
         task.Show();
     }
     catch
     {
         // prevent exceptions from double-click
     }
 }