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V24.2

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PdfPageFacade.ClearContent(PdfOrientedRectangle, PdfClearContentOptions) Method

Clears the document content located in the specified rectangle. Allows you to specify what content type to keep.

Namespace: DevExpress.Pdf

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

NuGet Package: DevExpress.Pdf.Core

#Declaration

public void ClearContent(
    PdfOrientedRectangle rect,
    PdfClearContentOptions options
)

#Parameters

Name Type Description
rect PdfOrientedRectangle

A page rectangle to clear.

options PdfClearContentOptions

Options that specify what content type to keep in the target rectangle.

#Remarks

The code sample below removes only text in the upper half of the first page:

result

using (PdfDocumentProcessor pdfDocumentProcessor = new PdfDocumentProcessor())
{
    // Load a document
    pdfDocumentProcessor.LoadDocument("Document.pdf");

    // Define the upper half of the first page
    PdfRectangle cropBox = pdfDocumentProcessor.Document.Pages[0].CropBox;
    PdfOrientedRectangle pageRectangle =
      new PdfOrientedRectangle(cropBox.TopLeft, cropBox.Width, cropBox.Height / 2, 0);

    // Specify what content type to keep in the target area
    PdfClearContentOptions options = new PdfClearContentOptions()
    {
        ClearAnnotations = false,
        ClearGraphics = false,
        ClearImages = false
    };

    // Obtain the first page properties
    PdfPageFacade pageFacade = pdfDocumentProcessor.DocumentFacade.Pages[0];

    // Clear the upper half of the page
    pageFacade.ClearContent(pageRectangle, options);

    // Save the result
    pdfDocumentProcessor.SaveDocument("Document_cleared.pdf");
}
See Also