You should be able to set the AppointmentsSource of the ScheduleView to an ObvservableCollection<CustomAppointmentClass> without a problem - the approach is demonstrated in our online example here
. Note that your CustomAppointmentClass should inherit Appointment/AppointmentBase and should override Copy
Please try it and if you still experience any issues, contact us again.
the Telerik team
Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>