PdfViewerControl.FormFieldValueChanged Event

Occurs after an interactive form field value in the PDF document has been changed.

Namespace: DevExpress.Xpf.PdfViewer

Assembly: DevExpress.Xpf.PdfViewer.v19.1.dll

Declaration

C#

public event FormFieldValueChangedEventHandler FormFieldValueChanged

VB.NET

Public Event FormFieldValueChanged As FormFieldValueChangedEventHandler

Event Data

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

Property	Description
FieldName	Gets the name of the interactive form field in the PDF document.
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.
NewValue	Gets an object which represents the new value of the form field which has been assigned.
OldValue	Gets the form field’s previous value.
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.