How do I find out what version of PDFNet I have?

Q:
I am using PDFNet for .NET. I think am I still using a very old
release, so how do I find the DLL version?
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A:

To find out what version of PDFNet you are using, right-click on
PDFNet11.DLL and select Version/Summary tab. The latest version as of
Nov 27 2006 is v.3.56.