PdfPageFacade.ClearContent(PdfRectangle, Boolean, PdfClearContentOptions) Method
In This Article
Clears the document content located in the specified rectangle. Allows you to specify whether to use the page coordinate system, and what content type to keep.
Namespace: DevExpress.Pdf
Assembly: DevExpress.Pdf.v24.2.Core.dll
NuGet Package: DevExpress.Pdf.Core
#Declaration
public void ClearContent(
PdfRectangle rect,
bool usePageCoordinateSystem,
PdfClearContentOptions options
)
#Parameters
Name | Type | Description |
---|---|---|
rect | Pdf |
A page rectangle to clear. |
use |
Boolean | true to use the page coordinate system; otherwise, false. |
options | Pdf |
An object that contains clear content options. |
#Remarks
The code sample below removes only text in the upper half of the first page:
using (PdfDocumentProcessor pdfDocumentProcessor = new PdfDocumentProcessor())
{
pdfDocumentProcessor.LoadDocument("Document.pdf");
PdfPageFacade pageFacade = pdfDocumentProcessor.DocumentFacade.Pages[0];
PdfRectangle cropBox = pdfDocumentProcessor.Document.Pages[0].CropBox;
double halfPage = cropBox.Top / 2;
PdfRectangle pageRectangle = new PdfRectangle(cropBox.Left, halfPage, cropBox.Right + halfPage, cropBox.Top);
PdfClearContentOptions options = new PdfClearContentOptions()
{
ClearAnnotations = false,
ClearGraphics = false,
ClearImages = false
};
// Clear the page area
pageFacade.ClearContent(pageRectangle, true, options);
pdfDocumentProcessor.SaveDocument("Document_cleared.pdf");
}
See Also