Hi Alan,
My apologies, that approach isn't available yet (we're working on it now). In the meantime, you can still accomplish what you want by using the TreeView's
CheckItem and
UncheckItem methods:
As an example, let's say the TreeView's ItemsSource was
ObservableCollection<HomeMenuItem>, then you could do this:
I'm going to update the documentation as soon as possible to explain these methods.
Regards,
Lance | Tech Support Engineer, Sr.
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