I noticed when I'm using (binding) the SelectedPageIndex property and I try to bind the SelectionChanging event to a command in the ViewModel it never fires. Is there any restriction to use both properties together or Are they mutually exclusive?
I've tried to reproduce the problem you report, but to no avail. You can check the attached sample project which illustrates my attempt. Please note that I am using our EventToCommandBehavior.
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Feedback Portal
and vote to affect the priority of the items