Skip to main content
All docs
V24.2

DevExpress v24.2 Update — Your Feedback Matters

Our What's New in v24.2 webpage includes product-specific surveys. Your response to our survey questions will help us measure product satisfaction for features released in this major update and help us refine our plans for our next major release.

Take the survey Not interested

PdfViewerAnnotationExtensions Class

Defines extension methods for the IPdfViewerAnnotation interface.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v24.2.Drawing.dll

NuGet Package: DevExpress.Pdf.Drawing

#Declaration

public static class PdfViewerAnnotationExtensions

#Remarks

The PdfViewerAnnotationExtensions class methods allow you to retrieve options for specific annotation types when the following events fire:

  • AnnotationCreated
  • AnnotationChanged
  • AnnotationDeleting
  • AnnotationDeleted
  • AnnotationGotFocus
  • AnnotationLostFocus

The code sample below calls the PdfMarkupAnnotationDataExtensions.AsTextMarkupAnnotation method to retrieve text markup annotation options in the AnnotationDeleting event handler:

private void PdfViewer_AnnotationDeleting(object sender, PdfAnnotationDeletingEventArgs e)
{
    if (e.Annotation.Type == PdfAnnotationType.TextMarkup)
    {
        IPdfViewerTextMarkupAnnotation annotation =
        e.Annotation.AsTextMarkupAnnotation();
        if (annotation.Style == PdfTextMarkupAnnotationType.StrikeOut)
            e.Cancel = true;
    }
}

#Inheritance

Object
PdfViewerAnnotationExtensions
See Also