c# serialize nested class

Question

I\'m trying to serialize a dummy collection of orders, where each order contains a product. The collection is serializing fine, but the example product properties inside the

Answer 1

You can't serialize an interface..

An interface is nothing more than a description of a set of behaviors. It says nothing about the contents of an instance. In particular, although an instance of a class implementing an interface must implement all of its members, it will certainly have properties of its own which need to be serialized.

PS: copied from Serializing interfaces