PdfViewer.FormFieldValueChanging Event

Occurs before a new form field value is posted.

Namespace: DevExpress.XtraPdfViewer

Assembly: DevExpress.XtraPdfViewer.v23.2.dll

NuGet Package: DevExpress.Win.PdfViewer

Declaration

C#

public event PdfFormFieldValueChangingEventHandler FormFieldValueChanging

VB.NET

Public Event FormFieldValueChanging As PdfFormFieldValueChangingEventHandler

Event Data

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

Property	Description
Cancel	Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs.
FieldName	Gets the name of the form field.
NewValue	Gets or sets a new value of the form field.
OldValue	Gets the form field’s previous value.

Remarks

The FormFieldValueChanging event fires when the field editor loses focus: the user clicked on any other place in the document, pressed ENTER or TAB.

Handle this event to cancel changing the form field value.