Convert Byte array to XML

Hi,

I have created a PDF document using a third party component and I can get the results as a Byte Array. I now need to add this to a xml document to be returned from a webservice. How do I go about this? I have looked at serialization but can't get my head around it!

Is my best method to save the PDF to a file and then read it into the XML of is there another method?

Either way, how is it done?

Thanks,

Smert