The OnClientAppointmenMoving client-side event is called as the user is moving an appointment.
Two parameters are passed to the event handler:
sender is the scheduler client object.
eventArgs has the following methods:
get_appointment() that returns the appointment instance.
get_targetSlot() returns the Time Slot on which the mouse is located at this moment.
set_cancel() lets you permit or block the moving of the appointment.Calling set_cancel(true) aborts the moving operation,while set_cancel(false) allows the scheduler to proceed with moving the appointment.