PdfViewerControl.AnnotationDeleting Event

Fires before a text markup annotation (highlight, strikethrough or underline) is being deleted on a page.

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

NuGet Package: DevExpress.Wpf.PdfViewer

Declaration

public event PdfAnnotationDeletingEventHandler AnnotationDeleting

Public Event AnnotationDeleting As PdfAnnotationDeletingEventHandler

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

Property	Description
Annotation	Gets the annotation being deleted.
Cancel	Gets or sets whether the event should be canceled.
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 prohibit the annotation’s deletion, set the PdfAnnotationDeletingEventArgs.Cancel property to true.