During the first “pizza session” of the Dutch Dynamics Community I was much pleasured to demonstrate some of the features of Microsoft Dynamics NAV Web Services. It was a session with a lot of technical stuff, including coding in C#. Probably for some people who are not so familiar with Visual Studio and .Net languages a little bit too fast and too complex.
Some of the attendees of my session asked me to publish the demonstrated source code. Well, the good news is that somebody already has done this. I recommend you to read the blog of Freddy Kristiansen: Connecting to NAV Web Services from C# using Web Reference. And I can highly recommend you to explore all his postings since there are a lot of examples around there.