public MasterDetailPageDemo()
        {
            //ListData
            var menuData = new List<DetailPageContent>
            {
                new DetailPageContent("Box View Page", typeof (BoxViewDemoPage)),
                new DetailPageContent("Content Page", typeof (ContentDemoPage)),
                new DetailPageContent("Image Page", typeof (DownloadImageDemoPage)),
                new DetailPageContent("Label Page", typeof (LabelPage)),
                new DetailPageContent("Stop Watch App", typeof (StopWatchApp))
            };

            //Create MenuListView
            var detailMenuView = new ListView
            {
                ItemsSource = menuData,
            };

            //Create new TapGesture
            var tap = new TapGestureRecognizer();
            tap.Tapped += (sender, args) => { IsPresented = true; };

            //Click/tap eventhandler
            detailMenuView.ItemSelected += (sender, args) =>
            {
                var detailItem = (DetailPageContent) args.SelectedItem;

                DetailPageContent detailList =
                    new DetailPageContent(detailItem.Name, detailItem.DetailPage);

                ContentPage page =
                    (ContentPage) Activator.CreateInstance(detailList.DetailPage);

                Detail = page;
                page.Content.GestureRecognizers.Add(tap);

                IsPresented = false;
            };

            //Set Homepage Detail
            var home = new BoxViewDemoPage();
            Detail = home;
            home.Content.GestureRecognizers.Add(tap);

            //BuildPage
            Master = new ContentPage
            {
                Title = "MasterPage",
                Content = new StackLayout
                {
                    Children = { detailMenuView }
                }

            };
        }
        //View
        public MasterDetailDemoPage()
        {
            var menuPage = new MenuPage();

            menuPage.Menu.ItemSelected += (sender, e) =>
                NavigateTo(e.SelectedItem as MenuItem);

            Master = menuPage;

            var box = new BoxViewDemoPage();
            Detail = box;

            var tap = new TapGestureRecognizer();
            tap.Tapped += (sender, args) => { IsPresented = true; };

            box.Content.BackgroundColor = Color.Transparent;
            box.Content.GestureRecognizers.Add(tap);
        }