private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            MyViewModel = DataContext as SetCategoryViewModel;

            if (AppGlobal.User.Categories != null && AppGlobal.User.Categories.Count > 0)
            {
                foreach (Category category in AppGlobal.User.Categories)
                {
                    category.IsChecked = SelectedShow.Categories.SingleOrDefault(x => x.Name == category.Name) != null;
                }
            }
            else
            {
                sv_Categories.Visibility    = Visibility.Hidden;
                lbl_NoCategories.Visibility = Visibility.Visible;

                btn_Accept.Visibility = Visibility.Hidden;
            }
        }
        public SetCategoryPage()
        {
            InitializeComponent();

            ViewModel = BindingContext as SetCategoryViewModel;
        }