1 files changed, 17 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/DataTemplateSelector.cs b/Xamarin.Forms.Core/DataTemplateSelector.cs
new file mode 100644
index 00000000..8ffa4781
--- /dev/null
+++ b/Xamarin.Forms.Core/DataTemplateSelector.cs
@@ -0,0 +1,17 @@
+using System;
+
+namespace Xamarin.Forms
+{
+	public abstract class DataTemplateSelector : DataTemplate
+	{
+		public DataTemplate SelectTemplate(object item, BindableObject container)
+		{
+			DataTemplate result = OnSelectTemplate(item, container);
+			if (result is DataTemplateSelector)
+				throw new NotSupportedException("DataTemplateSelector.OnSelectTemplate must not return another DataTemplateSelector");
+			return result;
+		}
+
+		protected abstract DataTemplate OnSelectTemplate(object item, BindableObject container);
+	}
+}
+\ No newline at end of file