WCF with shared objects and derived classes on client

Question

I have a WCF serivic and Im sharing types with a client in a shared assembly. If the client create a derived class will it be possible to pass back the derived type to the service so that I can read the added properties through reflection ?

I tried but having issues with KnownTypes since the service dont know how to deserialize the derived type.

[Serializable]
public abstract class Car : ICar
{........

//on the client :

[Serializable]
public class MyCar : Car
{......

when passing myCar to Service I get the exception complaining about knownType but I cant add this on the server since I wont know what the client will be sending through and I want to handle extra properties through reflection.

Possible to register client types as knowntypes at runtime ?
Is this maybe the solution ? http://blogs.msdn.com/b/sowmy/archive/2006/03/26/561188.aspx

Answer 1

Hello,

this is not possible. Both service and client has to know what types will be sent in messages. If you want to use known type you have to define that relation to parent type on the service. Why do you need to know added properties on the server?

Best regards, Ladislav