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cschrenk
Joined: 16 Apr 2008
Posts: 1
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 Posted: Wed Apr 16, 2008 10:05 am Post subject: Image Watermark |
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Hello,
I need your help 
We get invoices from a customer in PDF format and need to add images (in German: Falzmarken) on the pages. A cutter reads those images and cuts the invoices at specific points. The printer works with continous paper and the cutter cuts the single pages.
My problem is that I cannot simply add images to a specific existing page without creating a new page. Maybe I do something wrong, but whenever I try to add something to an existing PDF, PDFSharp creates a new page.
I tried watermarking. With text it works fine, but with images it compiles and the output PDF is the same as the input PDF.
The questions are:
- (How) is it possible to do watermarking with images at a specific position and page?
- (How) is it possible to add images to existing pages without adding new pages?
Thanks in advance!
Christoph |
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Thomas Hoevel
Joined: 16 Oct 2006
Posts: 387
Location: Cologne, Germany
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| Posted: Mon Apr 21, 2008 2:23 pm Post subject: |
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Hello!
I'm not sure what's the problem.
Adding watermarks to an existing file is quite simple:
| Code: | PdfDocument document = PdfReader.Open(pdfFileName);
foreach (PdfPage page in document.Pages)
{
XGraphics gfx = XGraphics.FromPdfPage(page);
[... do some drawing here ...]
}
document.Save(pdfFileName); |
HTH
_________________
Regards
Thomas Hoevel
PDFsharp Team |
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