PdfPageFacade.ApplyRedactAnnotations(Func<PdfAnnotationFacade, Boolean>, PdfClearContentOptions) Method

Applies redaction annotations based on the specified criteria and allows you to specify what content type to keep visible in the redaction area.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v25.1.Core.dll

NuGet Package: DevExpress.Pdf.Core

Declaration

C#

public void ApplyRedactAnnotations(
    Func<PdfAnnotationFacade, bool> predicate,
    PdfClearContentOptions options = null
)

VB.NET

Public Sub ApplyRedactAnnotations(
    predicate As Func(Of PdfAnnotationFacade, Boolean),
    options As PdfClearContentOptions = Nothing
)

Parameters

Name	Type	Description
predicate	Func<PdfAnnotationFacade, Boolean>	Defines a set of criteria for the PdfAnnotationFacade object.

Optional Parameters

Name	Type	Default	Description
options	PdfClearContentOptions	null	Options that specify what content type to keep visible in the redaction area.

Remarks

Example: Apply Redaction Annotations on Lower Half of the Page

C#

using DevExpress.Pdf;

PdfDocumentProcessor pdfProcessor = new PdfDocumentProcessor();
pdfProcessor.LoadDocument("Invoice.pdf");

PdfDocumentFacade documentFacade = pdfProcessor.DocumentFacade;
var pageFacade = documentFacade.Pages[0];

double halfPage = pdfProcessor.Document.Pages[0].CropBox.Top / 2;
pageFacade.ApplyRedactAnnotations(x => x.Rectangle.Top < halfPage);

pdfProcessor.SaveDocument("output.pdf");

VB.NET

Imports DevExpress.Pdf

Private pdfProcessor As New PdfDocumentProcessor()
pdfProcessor.LoadDocument("Invoice.pdf")

Dim documentFacade As PdfDocumentFacade = pdfProcessor.DocumentFacade
Dim pageFacade = documentFacade.Pages(0)

Dim halfPage As Double = pdfProcessor.Document.Pages(0).CropBox.Top / 2
pageFacade.ApplyRedactAnnotations(Function(x) x.Rectangle.Top < halfPage)

pdfProcessor.SaveDocument("output.pdf")