.net - Multiple interfaces from a single WCF service?

Question

Can a single WCF service offer multiple interfaces, and if so how would you express this in app.config?

I mean one services offering several Interfaces on one endpoint.

Answer 1

First you need to be clear what a service is. Do you mean a single endpoint, or multiple endpoints in the same host?

Assuming you mean a single endpoint, then yes, but with a little work. An endpoint can only implement a single interface; so what you need to do is combine all the interfaces you want to implement into a single interface

public interface IMyInterface : IInterface1, IInterface2

and then implement them all inside your implementation class. What you cannot do is have multiple interfaces and multiple implementations magically merge into a single endpoint.