Fires after the selection has been changed.
NuGet Package: DevExpress.Win.Scheduler
The SelectionChanged event's data class is EventArgs.
The SelectionChanged event serves as notification that an active view selection is changed, but not when the particular appointment has been selected.
To be notified when the user selects an appointment, subscribe to the SchedulerControl.SelectedAppointments.CollectionChanged (NotificationCollection<T>.CollectionChanged) event instead.