# AppointmentContextMenuItemClicking

The **AppointmentContextMenuItemClicking** event occurs when appointment context menu item is clicked, before processing default commands.
The event is not triggered in Web Service binding scernarios.

AppointmentContextMenuItemClicking has two parameters:

* **sender** is the scheduler control

* **e** is an object of type AppointmentContextMenuItemClickingEventArgs. It has three properties:

* **MenuItem**

* **Appointment**

* **Cancel**

This event can be cancelled.