wpf-devexpress-dot-xpf-dot-scheduling-dot-schedulercontrol-ca71611c.md
Occurs when trying to edit the appointment.
Namespace : DevExpress.Xpf.Scheduling
Assembly : DevExpress.Xpf.Scheduling.v25.2.dll
NuGet Package : DevExpress.Wpf.Scheduling
public event AppointmentItemOperationEventHandler CustomAllowAppointmentEdit
Public Event CustomAllowAppointmentEdit As AppointmentItemOperationEventHandler
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.
Note
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