[working-with] listview context, convert to Observable

Author: conceptdev

WorkingWithListview/WorkingWithListview/App.cs

@@ -33,7 +33,7 @@ public App ()
 			tabsXaml.Children.Add (new ContextActionsXaml {Title="ContextX", Icon = "xaml.png" });
 			tabsXaml.Children.Add (new CustomCellXaml {Title="ButtonX", Icon = "xaml.png" });
 
-			//MainPage = tabsXaml;
+			MainPage = tabsXaml;
 
 		}
 	}

WorkingWithListview/WorkingWithListview/Context/ContextActionsXaml.xaml.cs

@@ -3,19 +3,22 @@
 
 using Xamarin.Forms;
 using System.Diagnostics;
+using System.Collections.ObjectModel;
 
 namespace WorkingWithListview
 {
 	public partial class ContextActionsXaml : ContentPage
 	{
 
-		List<string> items;
+		ObservableCollection<string> items;
 		public ContextActionsXaml ()
 		{
 			InitializeComponent ();
 
-			items = new List<string> { "alpha", "beta", "gamma", "delta", "epsilon" };
-			listView.ItemsSource = items;
+			items = new ObservableCollection<string> { "alpha", "beta", "gamma", "delta", "epsilon" };
+			//listView.ItemsSource = items;
+			listView.SetBinding (ListView.ItemsSourceProperty, new Binding ("."));
+			listView.BindingContext = items;
 		}
 
 		public void OnItemSelected (object sender, SelectedItemChangedEventArgs e) {
@@ -35,7 +38,6 @@ public void OnDelete (object sender, EventArgs e) {
 
 			Debug.WriteLine ("delete " + mi.CommandParameter.ToString ());
 			items.Remove (mi.CommandParameter.ToString());
-			listView.ItemsSource = items;
 		}
 	}
 }