WCF contract returning interface could cause serialization issue?

Question

I am trying to define a WCF contract that returns an interface, something like below:

[ServiceContract]
public interface IMyContracts
{
    [OperationContrac         


        

Answer 1

In this post, I go into details of how to make WCF work for receiving and returning derived classes and interfaces.

http://codeonaboat.wordpress.com/2010/03/01/serializing-and-deserializing-derived-types-or-interfaces-in-wcf/