1 files changed, 83 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla27779.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla27779.cs
new file mode 100644
index 00000000..271c4b05
--- /dev/null
+++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Bugzilla27779.cs
@@ -0,0 +1,83 @@
+using System;
+
+using Xamarin.Forms.CustomAttributes;
+using System.Collections.Generic;
+
+#if UITEST
+using Xamarin.UITest;
+using NUnit.Framework;
+#endif
+
+namespace Xamarin.Forms.Controls
+{
+	[Preserve (AllMembers = true)]
+	[Issue (IssueTracker.Bugzilla, 27779, "Xamarin.Forms.ReadOnlyListAdapter.IndexOf throws NotImplementedExcpetion ")]
+	public class Bugzilla27779 : TestContentPage // or TestMasterDetailPage, etc ...
+	{
+		ListView _listview;
+		IReadOnlyList<Person> _itemsSource;
+
+		public class Source : IReadOnlyList<Person>
+		{
+			List<Person> _items;
+			public Source ()
+			{
+				_items = new List<Person> ();
+
+				for (int i = 0; i < 100; i++) {
+					_items.Add (new Person ("Person #" + i));
+				}
+
+			}
+			#region IEnumerable implementation
+			public IEnumerator<Person> GetEnumerator ()
+			{
+				return _items.GetEnumerator ();
+			}
+			#endregion
+			#region IEnumerable implementation
+			System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator ()
+			{
+				return _items.GetEnumerator ();
+			}
+			#endregion
+			#region IReadOnlyList implementation
+			public Person this [int index] {
+				get {
+					return _items [index];
+				}
+			}
+			#endregion
+			#region IReadOnlyCollection implementation
+			public int Count {
+				get {
+					return _items.Count;
+				}
+			}
+			#endregion
+			
+		}
+		protected override void Init ()
+		{
+			
+			_itemsSource = new Source();
+
+			_listview = new ListView {
+				ItemsSource = _itemsSource
+			};
+
+			var btn = new Button { Text = "Set selected", AutomationId="btnSelect" };
+			btn.Clicked+= (object sender, EventArgs e) => {
+				_listview.SelectedItem = _itemsSource [0];
+			};
+
+			Content = new StackLayout { Children = { btn, _listview } };
+		}
+
+		protected override void OnAppearing ()
+		{
+			base.OnAppearing ();
+		}
+
+	}
+}