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The OnClientAppointmentResizeStart client-side event is called before an appointment starts to resize.

Two parameters are passed to the event handler:

  • sender is the scheduler client object.

  • eventArgs has the following methods:

  • get_appointment() returns the appointment that is about to be resized.

  • set_cancel() lets you permit or block the resize of the appointment. Calling set_cancel(true) stops the resize, while set_cancel(false) allows the user to give the appointment a new duration.


This example prevents the user from resizing the "Planning Session" appointment but permits all other appointments to be resized:

<script type="text/javascript">   
function OnClientAppointmentResizeStart(sender, eventArgs)
     var apt = eventArgs.get_Appointment();
     if (apt.get_subject() == "Planning Session")
 DataSourceID="AppointmentsDS" /> 

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