PdfPageFacade.ClearContent(PdfRectangle, 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(
PdfRectangle rect,
PdfClearContentOptions options
)
#Parameters
Name | Type | Description |
---|---|---|
rect | Pdf |
A page rectangle to clear. |
options | Pdf |
Options that specify what content type to keep in the target rectangle. |
#Example
The code sample below removes only text in the upper half of the first page:
using (PdfDocumentProcessor pdfDocumentProcessor = new PdfDocumentProcessor())
{
// Load a document
pdfDocumentProcessor.LoadDocument("Document.pdf");
// Access the first page properties
PdfPageFacade pageFacade = pdfDocumentProcessor.DocumentFacade.Pages[0];
// Define an area to clear
PdfRectangle cropBox = pdfDocumentProcessor.Document.Pages[0].CropBox;
double halfPage = cropBox.Top / 2;
PdfRectangle pageRectangle = new PdfRectangle(cropBox.Left, halfPage, cropBox.Right + halfPage, cropBox.Top);
// Set what content type to keep
PdfClearContentOptions options = new PdfClearContentOptions()
{
ClearAnnotations = false,
ClearGraphics = false,
ClearImages = false
};
// Clear the page area
pageFacade.ClearContent(pageRectangle, options);
pdfDocumentProcessor.SaveDocument("Document_cleared.pdf");
}