private async void ItemClick_Click(object sender, RoutedEventArgs e)
        {
            try
            {
                JExercise       Exercise = new JExercise();
                HyperlinkButton btn      = (HyperlinkButton)sender;

                Exercise = Exercises.Where(x => x.ID == (int)btn.CommandParameter).FirstOrDefault();

                this.Frame.Navigate(typeof(ExerciseDetails), Exercise);
            }
            catch (Exception)
            {
                var dialog = new MessageDialog("Something went wrong with our services. Please try again.");
                dialog.Commands.Add(new UICommand("OK"));
                await dialog.ShowAsync();
            }
        }
        protected async override void OnNavigatedTo(NavigationEventArgs e)
        {
            try {
                if (e.Parameter is JExercise)
                {
                    Exercise = e.Parameter as JExercise;
                }

                Title.Text        = Exercise.ExerciseName;
                ImageGuide.Source = new BitmapImage(new Uri("ms-appx:/Assets/Exercises/" + Exercise.ExerciseImage));
                Description.Text  = Exercise.ExerciseDescription;
            }
            catch (Exception)
            {
                var dialog = new MessageDialog("Something went wrong with our services. Please try again.");
                dialog.Commands.Add(new UICommand("OK"));
                await dialog.ShowAsync();
            }
            base.OnNavigatedTo(e);
        }