A basic filtration could be performed in the TextBox`a TextChanged event handler like so:
sender, TextChangedEventArgs e)
.radTreeView.ItemsSource = (
IEnumerable<DataItem>).Where(x => x.Text.EndsWith(
This filters only the root level collection, if you need to filter the whole hierarchy, you will have to rebuild it again and then rebinding.
the Telerik team
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