SchedulerControl.CustomAllowAppointmentEdit Event

Occurs when trying to edit the appointment.

Namespace: DevExpress.Xpf.Scheduling

Assembly: DevExpress.Xpf.Scheduling.v21.2.dll


public event AppointmentItemOperationEventHandler CustomAllowAppointmentEdit

Event Data

The CustomAllowAppointmentEdit event's data class is AppointmentItemOperationEventArgs. The following properties provide information specific to this event:

Property Description
Allow Gets or sets whether performing a particular action is allowed.
Appointment Gets the appointment for which the element is raised. Inherited from AppointmentItemEventArgs.
Recurring Gets whether the target appointment is recurring.


Handle the CustomAllowAppointmentEdit event and sets its AppointmentItemOperationEventArgs.Allow property to specify a particular case when an end-user is allowed to edit an appointment. If you do not specify the required behavior manually, the SchedulerControl.AllowAppointmentEdit property manages whether editing appointments is allowed.

Access the appointment to be edited using the AppointmentItemEventArgs.Appointment property. To prevent an appointment from being edited, set the AppointmentItemOperationEventArgs.Allow property to false.


The SchedulerControl uses the CommandManager class to manage commands executed by the ribbon or context menu items. The RequerySuggested event is fired when any changes that can affect the command’s ability to execute (e.g., change of focus) have been made. It notifies the command that is should raise the CanExecuteChanged event, which makes the CustomAllowAppointmentEdit event to fire as well. This chain of events can occur involuntarily, so make sure that the event handler does not contain any code that may slow the application performance.

See Also