wpf-devexpress-dot-xpf-dot-scheduling-dot-schedulercontrol-2f37974e.md
Occurs before the user has deleted appointments from the scheduler.
Namespace : DevExpress.Xpf.Scheduling
Assembly : DevExpress.Xpf.Scheduling.v25.2.dll
NuGet Package : DevExpress.Wpf.Scheduling
public event AppointmentRemovingEventHandler AppointmentRemoving
Public Event AppointmentRemoving As AppointmentRemovingEventHandler
The AppointmentRemoving event's data class is AppointmentRemovingEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Appointments | Returns the collection of appointments that are to be deleted. |
| Cancel | Gets or sets whether the event should be canceled. Inherited from CancelRoutedEventArgs. |
| CanceledAppointments | Provides access to the collection of appointments that should be excluded from being deleted. |
| Handled | Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs. |
| OriginalSource | Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs. |
| RoutedEvent | Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs. |
| Source | Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| InvokeEventHandler(Delegate, Object) | When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs. |
| OnSetSource(Object) | When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs. |
To prevent specific appointments from being deleted, add them to the CanceledAppointments collection. If you want to implement a custom appointment removal functionality, set the event’s Cancel property to true to disable the default mechanism.
See Also