AspNetEdit.UI.PropertyEditors.CollectionEditor.removeButton_Clicked C# (CSharp) Method

        void removeButton_Clicked(object sender, EventArgs e)
        {
            //get selected iter and the replacement selection
            TreeIter iter, newSelection;
            TreeModel model;
            if (!itemTree.Selection.GetSelected (out model, out iter))
                return;

            newSelection = iter.Copy ();
            if (!IterPrev (model, ref newSelection)) {
                newSelection = iter.Copy ();
                if (!itemStore.IterNext (ref newSelection))
                    newSelection = TreeIter.Zero;
            }

            //new selection. Zeroing previousIter prevents trying to update name of deleted iter.
            previousIter = TreeIter.Zero;
            if (itemStore.IterIsValid (newSelection))
                itemTree.Selection.SelectIter (newSelection);

            //and the removal and index update
            ((ListStore) model).Remove (ref iter);
            UpdateIndices ();
        }