Hi Ted2102, never mind. The documentation from Microsoft is not that bad. But there are not really enough easy code examples. They tend to explain everything only once, showing only one example. All that i can tell by now is that working with linq seems to be much more efficient. By the way i discovered a pretty well-filled collection (not a collection in the Visual basic sense) in a separate CodeProject Forum. Last but not least, don't bother about the continuously changing name under my messages. I only experienced little logon problems.... But everything should be fine now. :) Anyway, thanks you for your help.