[XWT] Fix for expanded nodes

mono · Feb 13, 2015 · dc6cf1f · dc6cf1f
1 parent 4cacbc6
commit dc6cf1f
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/Xwt.WPF/Xwt.WPFBackend/ExTreeViewItem.cs b/Xwt.WPF/Xwt.WPFBackend/ExTreeViewItem.cs
@@ -65,7 +65,10 @@ protected override void OnExpanded (RoutedEventArgs e)
 
 		protected override void OnCollapsed(RoutedEventArgs e)
 		{
-			var node = (TreeStoreNode)DataContext;
+			var node = DataContext as TreeStoreNode;
+			if (node == null) {
+				return;
+			}
 			if (!IsExpanded)
 				UnselectChildren((object o, ExTreeViewItem i) =>
 				{