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

Applies redaction annotations based on the specified criteria and allows you to choose which content remains visible.

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 in target regions.

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;

double halfPage = pdfProcessor.Document.Pages[0].CropBox.Top / 2;
documentFacade.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)

documentFacade.ApplyRedactAnnotations(Function(x) x.Rectangle.Top < halfPage)

pdfProcessor.SaveDocument("output.pdf")