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V25.1
  • SchedulerControl.AppointmentRemoving Event

    Occurs before the user has deleted appointments from the scheduler.

    Namespace: DevExpress.Xpf.Scheduling

    Assembly: DevExpress.Xpf.Scheduling.v25.1.dll

    NuGet Package: DevExpress.Wpf.Scheduling

    Declaration

    public event AppointmentRemovingEventHandler AppointmentRemoving

    Event Data

    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.

    Remarks

    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