WCF编程双工遇到的问题

[fromxiaoqiang]

向 ChannelFactory 提供的 InstanceContext 包含未实现 CallbackContractType“MyMessageCallback.IMyMessage”的 UserObject。
希望高人相助，这个问题困扰我一天了

[zhongjiekangping]

提的问题 相关信息 太少

[fromxiaoqiang]

这是主函数：
static void Main(string[] args)
{
WSDualHttpBinding binding = new WSDualHttpBinding();

EndpointAddress address = new EndpointAddress("http://localhost:8731/Design_Time_Addresses/IMyMessage/Service1/");

ClientCallback callback = new ClientCallback();

InstanceContext context = new InstanceContext(callback);

DuplexChannelFactory<IMyMessage> factory = new DuplexChannelFactory<IMyMessage>(context, binding, address);

IMyMessage messageChannel = factory.CreateChannel();//到这出的错

messageChannel.MessageToServer("From the client");
}
下面是我自己定义的一个类，继承了服务端的接口：
class ClientCallback:IMyMessageCallback
{
public void OnCallback(string message)
{
Console.WriteLine("message from the server:{0}",message);
}
}
服务端的接口：
[ServiceContract]
public interface IMyMessageCallback
{
[OperationContract(IsOneWay = true)]
void OnCallback(string message);
}

[ServiceContract(CallbackContract=typeof(IMyMessage))]
public interface IMyMessage
{
[OperationContract]
void MessageToServer(string message);
}
服务端接口实现：
public class MessageService : IMyMessage
{
public void MessageToServer(string message)
{
Console.WriteLine("message from the client:{0}",message);

IMyMessageCallback callback = OperationContext.Current.GetCallbackChannel<IMyMessageCallback>();

callback.OnCallback("message from the server");

//new Thread(ThreadCallback).Start(callback);
}

private void ThreadCallback(object callback)
{
IMyMessageCallback messageCallback = callback as IMyMessageCallback;

for (int i = 0; i < 10; i++)
{
messageCallback.OnCallback("message"+ i);

Thread.Sleep(1000);
}
}
}
谁能帮帮我啊？？

[bo_301]

我也遇着相同的问题，帮顶~~~

[wzhangjinghai]

求解决 。。。没人回答啊，顶下