The Windows Communication Foundation (or WCF) is an application programming
interface (API) in the. NET Framework for building connected, service-oriented
WCF builds on the existing technologies of ASMX, .NET Remoting, MSMQ and DCOM.
WCF attempts to unify these technologies and harness the power of all, while
simplifying the process of implementation.
In this Article we learn how to create WCF Service and how to call in the code
behind file (.cs).