1 files changed, 77 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue2270.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue2270.cs
new file mode 100644
index 00000000..1c2a3a33
--- /dev/null
+++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue2270.cs
@@ -0,0 +1,77 @@
+using System.Collections.ObjectModel;
+using Xamarin.Forms.CustomAttributes;
+
+namespace Xamarin.Forms.Controls.TestCasesPages
+{
+	[Preserve (AllMembers=true)]
+	[Issue (IssueTracker.Github, 2270, "NSInternalCOnsistencyException when bound to ObservableCollection", PlatformAffected.iOS)]
+	public class Issue2270 : ContentPage
+	{
+		public Issue2270()
+		{
+			BindingContext = new TestListViewModel();
+
+			Padding = new Thickness(0, 40, 0, 0);
+
+			var btn = new Button {
+				Text = "Load Data",
+				BorderWidth = 1,
+				BorderColor = Color.Gray,
+			};
+			btn.SetBinding (Button.CommandProperty, "LoadDataCommand");
+
+			var lv = new ListView();// { IsGroupingEnabled = true };
+
+			var dt = new DataTemplate (typeof(TextCell));
+			dt.SetBinding (TextCell.TextProperty, "Name");
+
+			lv.ItemTemplate = dt;
+			lv.SetBinding (ListView.ItemsSourceProperty, "Rows");
+
+			Content = new StackLayout {
+				Children = {
+					btn,
+					lv
+				}
+			};
+
+		}
+
+		public class TestListViewModel
+		{
+			//public ObservableCollection<ObservableCollection<Row>> Rows {
+			public ObservableCollection<Row> Rows {
+				get;
+				set;
+			}
+
+			public TestListViewModel ()
+			{
+				//Rows = new ObservableCollection<ObservableCollection<Row>>();
+				Rows = new ObservableCollection<Row>();
+			}
+
+			Command _command;
+
+			public Command LoadDataCommand {
+				get {
+					return _command ?? (_command = new Command (LoadData));
+				}
+			}
+
+			void LoadData() {
+				Rows.Clear ();
+
+				foreach (var row in new[] { new Row { Name = "one" }, new Row { Name = "Two" } }) {
+					Rows.Add (row);
+				}
+			}
+
+		}
+
+		public class Row
+		{
+			public string Name { get; set; }
+		}
+	}
+}