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arif.zia · Joined: 18 Mar 2008 Posts: 2

Hi everyone,

I am facing a problem, when placing a watermark behind a PDF. I m using third method of applying the watermark i.e.

XPen pen = new XPen(XColor.FromArgb(50, 75, 0, 130), 3);
XBrush brush = new XSolidBrush(XColor.FromArgb(50, 106, 90, 205));

// Stroke the outline of the path
gfx.DrawPath(pen, brush, path);

Most of the PDFs are working fine, but few of the PDFs generated from MS Word and Adobe Professional 7 are causing problem. When I place watermark on those PDFs, the text and scanned images got dimmed even not readable.

While the same PDf works fine with the other two methods provided for watermark. But I have to use the third one which causes issue. Could anyone please help me in this issue.

Thomas Hoevel · Joined: 16 Oct 2006 Posts: 387 Location: Cologne, Germany

Don't forget to set PDF version to 1.4 or higher.
The first parameter of FromArgb specifies the opacity of the watermark - you could try other values with higher transparency.

The third method places watermarks before (not behind) the original content of the PDF file.
_________________
Regards
Thomas Hoevel
PDFsharp Team

arif.zia · Joined: 18 Mar 2008 Posts: 2

Hi,

I am working on the PDF with version higher than 1.4. The version of the PDF used is 1.6.
I am still working on it and found that the problem only occurs when I want to manipulate a PDF which is generated from a PDF using adobe PDF printer.
In the third method I set option to Append instead of prepend, then why it appears before text instead of behind text.
Please let me know what fix should be done.
Thanks