Occurs before showing the Appointment Window. This is a routed event.
public event AppointmentWindowShowingEventHandler AppointmentWindowShowing
Public Event AppointmentWindowShowing As AppointmentWindowShowingEventHandler
The AppointmentWindowShowing event's data class is AppointmentWindowShowingEventArgs. The following properties provide information specific to this event:
|Cancel||Gets or sets whether the event should be canceled. Inherited from CancelRoutedEventArgs.|
|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.|
|ViewModel||Provides access to the View Model for the invoked window. Inherited from WindowShowingEventArgs<T>.|
|Window||Gets or sets the window to which the event is raised. Inherited from WindowShowingEventArgs<T>.|
The event data class exposes the following methods:
|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.|
Handle the AppointmentWindowShowing event to specify the window displayed when editing the appointment, or hide it. You can specify a window for display using the WindowShowingEventArgs<T>.Window property, or not display any window at all by setting the CancelRoutedEventArgs.Cancel property to true.
You can also set the OptionsWindows.AppointmentWindowType property in XAML to replace the built-in editor with a custom appointment editing window. Learn more at the How to: Customize Editing and Recurrence Dialogs topic.