PdfViewer.AnnotationChanged Event

Fires after an annotation has been changed.

Namespace: DevExpress.XtraPdfViewer

Assembly: DevExpress.XtraPdfViewer.v20.2.dll

NuGet Package: DevExpress.Win.PdfViewer

Declaration

C#

public event PdfAnnotationChangedEventHandler AnnotationChanged

VB.NET

Public Event AnnotationChanged As PdfAnnotationChangedEventHandler

Event Data

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

Property	Description
Annotation	Obtains the changed annotation.

Remarks

The PdfAnnotationChangedEventArgs.Annotation property gets the changed annotation. Use the PdfViewerAnnotationExtensions class methods to obtain the specific type of annotation.

The code sample below shows how to check whether the markup annotation of a specific author was changed:

C#

private void PdfViewer_MarkupAnnotationChanged(object sender,
PdfAnnotationChangedEventArgs e)
{
    if (e.Annotation.Type == PdfAnnotationType.TextMarkup
    || e.Annotation.Type == PdfAnnotationType.Text)
    {
        IPdfViewerMarkupAnnotation annotation =
         e.Annotation.AsMarkupAnnotation();
        if (annotation.Author == "Brian Zetc")
            MessageBox.Show("The main editor's annotation is changed");
    }
}

VB.NET

  Private Sub PdfViewer_MarkupAnnotationChanged(ByVal sender As Object,
  ByVal e As PdfAnnotationChangedEventArgs)
      If e.Annotation.Type = PdfAnnotationType.TextMarkup
       OrElse e.Annotation.Type = PdfAnnotationType.Text Then
      Dim annotation As IPdfViewerMarkupAnnotation =
       e.Annotation.AsMarkupAnnotation()
      If annotation.Author = "Brian Zetc" Then
        MessageBox.Show("The main editor's annotation is changed")
      End If
      End If
  End Sub