I added 2 additional public and 2 additional private methods to my implementing class. No problems with that at all. I would NOT add these method declarations to the supplied interface, though. Leave that untouched. Hope this helps.
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com
subject: B&S: Adding methods to Data that are not in DBMain