Attach xml to a pdf (Crystal reports)

[KevinKrueger]

Does anyone have a code snippet that turns a normal PDF into a Zugferd PDF? In other words, embeds an xml?

[KevinKrueger]

I tried your .PDF library (internal class) and was able to find out the following:

[stephanstapel]

which pdf validator are you using and which version of the library are you using?