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copied!<p>Serialization is the process of converting between an object <strong>data</strong> and bytes which can be transferred over the wire. Interfaces define <strong>behavior</strong>, so by default WCF can't serialize such data. If you have the exact same assemblies on the client and the server, however, you can use the <code>NetDataContractSerializer</code>, which will essentially serialize (and be able to serialize) all the type information for the objects being serialized, so it can be recreated at the other side.</p> <p>The code below shows how to use the NetDataContractSerializer in a service for that (based on the main example for this, the post from Aaron Skonnard at <a href="http://www.pluralsight-training.net/community/blogs/aaron/archive/2006/04/21/22284.aspx" rel="nofollow">http://www.pluralsight-training.net/community/blogs/aaron/archive/2006/04/21/22284.aspx</a>)</p> <pre><code>public class StackOverflow_6932356 { [ServiceContract] public interface IWorker { [OperationContract] void Process(XmlElement data); [OperationContract] void Update(Rule rule); } [DataContract] public class Rule { [DataMember] public string Expression { get; set; } [DataMember] public List<IAction> Actions { get; set; } } public interface IAction { void Execute(XmlElement data); } public class Service : IWorker { static List<IAction> AllActions = new List<IAction>(); public void Process(XmlElement data) { foreach (var action in AllActions) { action.Execute(data); } } public void Update(Rule rule) { AllActions = rule.Actions; } } public class Action1 : IAction { public void Execute(XmlElement data) { Console.WriteLine("Executing {0} for data: {1}", this.GetType().Name, data.OuterXml); } } public class Action2 : IAction { public void Execute(XmlElement data) { Console.WriteLine("Executing {0} for data: {1}", this.GetType().Name, data.OuterXml); } } class NetDataContractSerializerOperationBehavior : DataContractSerializerOperationBehavior { public NetDataContractSerializerOperationBehavior(OperationDescription operationDescription) : base(operationDescription) { } public override XmlObjectSerializer CreateSerializer(Type type, string name, string ns, IList<Type> knownTypes) { return new NetDataContractSerializer(name, ns); } public override XmlObjectSerializer CreateSerializer(Type type, XmlDictionaryString name, XmlDictionaryString ns, IList<Type> knownTypes) { return new NetDataContractSerializer(name, ns); } } static void ReplaceDCSOB(ServiceEndpoint endpoint) { foreach (var operation in endpoint.Contract.Operations) { for (int i = 0; i < operation.Behaviors.Count; i++) { if (operation.Behaviors[i] is DataContractSerializerOperationBehavior) { operation.Behaviors[i] = new NetDataContractSerializerOperationBehavior(operation); break; } } } } public static void Test() { string baseAddress = "http://" + Environment.MachineName + ":8000/Service"; ServiceHost host = new ServiceHost(typeof(Service), new Uri(baseAddress)); ServiceEndpoint endpoint = host.AddServiceEndpoint(typeof(IWorker), new BasicHttpBinding(), ""); ReplaceDCSOB(endpoint); host.Open(); Console.WriteLine("Host opened"); var factory = new ChannelFactory<IWorker>(new BasicHttpBinding(), new EndpointAddress(baseAddress)); ReplaceDCSOB(factory.Endpoint); var proxy = factory.CreateChannel(); proxy.Update(new Rule { Expression = "Expr", Actions = new List<IAction> { new Action1(), new Action2() } }); XmlDocument doc = new XmlDocument(); doc.LoadXml("<root><foo>bar</foo></root>"); proxy.Process(doc.DocumentElement); ((IClientChannel)proxy).Close(); factory.Close(); Console.Write("Press ENTER to close the host"); Console.ReadLine(); host.Close(); } } </code></pre>

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