Delete item on TreeViewEdited event

[Zarko Vorkapic]

Hello,

I'm adding node on button click:

        void ButtonAdd_Click(Object sender, RoutedEventArgs e)
        {
            RadTreeViewItem selectedItem = (RadTreeViewItem)FormRevenueCodeTreeView.SelectedItem;

            _newAddedTreeViewItem = new RadTreeViewItem();

            _newAddedTreeViewItem.Header = "";

            selectedItem.Items.Add(_newAddedTreeViewItem);
            selectedItem.IsExpanded = true;

            _newAddedTreeViewItem.IsSelected = true;
            Deployment.Current.Dispatcher.BeginInvoke(() => _newAddedTreeViewItem.IsInEditMode = true);
        }

and then I'm trying to delete it if user writes nothing:

        void FormRevenueCodeTreeViewEdited(Object sender, RoutedEventArgs e)
        {
            RadTreeViewItem selectedItem = (RadTreeViewItem)FormRevenueCodeTreeView.SelectedItem;

            if (selectedItem.Header.ToString().Trim() == "")
            {
                // - removing newly added TreeViewItem if header is empty
                RadTreeViewItem parentItem = selectedItem.Parent as RadTreeViewItem;
                parentItem.Items.Remove(selectedItem);
                return;
            }
        }

And then exception occurss after method end.

P.S. Item paret is always RadTreeViewItem (not RadTreeVew)

[Kiril Stanoev]

Hi Zarko,

Thank you for reporting this issue. We will make sure to fix it as soon as possible.
As a workaround, you can place the code that removes the empty item in a Dispatcher.

if (selectedItem.Header.ToString().Trim() == "")
{
    // - removing newly added TreeViewItem if header is empty
    RadTreeViewItem parentItem = selectedItem.Parent as RadTreeViewItem;
    Dispatcher.BeginInvoke(() => parentItem.Items.Remove(selectedItem));
}

Give it a try and let me know how it works for you.
I have also added 1000 Telerik points to your account.

Regards,
Kiril Stanoev
the Telerik team

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