ASPxScheduler.AllowAppointmentCopy Event

public event AppointmentOperationEventHandler AllowAppointmentCopy

event Public AllowAppointmentCopy As AppointmentOperationEventHandler

ASPxScheduler1.OptionsCustomization.AllowAppointmentCopy = UsedAppointmentType.Custom;
...


protected void ASPxScheduler1_AllowAppointmentCopy(object sender, AppointmentOperationEventArgs e)
{

    if (e.Appointment.Subject == "Test") {

        e.Allow = false;

    }

}