Updated 2011-02-22: the underlying Stream is closed when PdfWriter.Close() is called, so the code for the PdfHandler.AddBackgroundPdf() method is updated (line 79 and further).
Well, I didn’t think this follow-up to Part 1 would come this quick, but here it is! Again I would like to emphasize that Jan Hoefnagels is the one who should take credit for this solution, but he isn’t the blog-writing type of guy. He’s not even a “Getting Things Done” guy. He’s a “Making Things Work” guy. And he’s pretty good at that.
Anyway, Part 1 showed you a general solution for an implementation of a Rendering Extension for SQL Server Reporting Services that was able to utilize the built-in (Microsoft provided) PDF Renderer, while enabling you to get the rendered PDF and do “something” with it, before sending it back to the SSRS server, which would subsequently send it to the end-user as a downloadable PDF file. That was a long sentence by English standards, but by Dutch standards, that’s kind of like a normal length. In German however, you would just be getting started. This whole article could be one sentence in German and still leave room for more.