In first and second parts of my tutorials entitled Introduction to Windows Communication Foundation and Fundamentals of Windows Communication Foundation I talked about principles of WCF and introduced this new technology in .NET 3.0.

In these parts I did not give any code, sample application or anything about development. After understanding all these principles, it is time to talk about programming model and start giving some examples.  We will discover basic concepts about development in this article and will follow our tutorials in the next parts by talking about each of fundamental concepts in more details (described in previous part).

However, this article is about programming model and development process in Windows Communication Foundation.  Before getting in, go back and read my previous articles about WCF to have a background about some concepts that we will use in this article.  If you have read them before or you are aware of these concepts then ignore them.