WCF exception

[izzetbaysal]

Hi all,
I am developing a WCF application and i can send simple DataContract classes without problems. But when i try to send a class having a different type of class as a field, i get CommunicationException. Class structure is like below;

    [DataContract]
    public class ClassA
    {
        [DataMember]
        public ClassB  myObject1;

        [DataMember]
        public ClassC  myObject2;
    }

And i also defined both ClassB and ClassC as DataContract. I don't know if i am doing something wrong. Any help would be appreciated.