使用类接口作为WCF服务参数

Question

我有WCF服务合同，并使用类接口的参数如下：

[ServiceContract(Name = "IFrameworkBaseService", CallbackContract = typeof(IFrameworkBaseServiceCallback))] 
public interface IFrameworkBaseService 
{ 
    [OperationContract] 
    void InitializeConnection(IClientID clientID); 
} 

，但我得到了以下错误：

The communication object, System.ServiceModel.Channels.ServiceChannel, cannot be used for communication because it is in the Faulted state

任何人都可以帮助我解决这个问题

谢谢 Afshin

Answer 1

我认为你传递给IClientID的concret对象对服务来说是未知的。 你必须与KnownType -Attribute

[ServiceContract(Name = "IFrameworkBaseService", CallbackContract = typeof(IFrameworkBaseServiceCallback))] 
[KnownType(typeof(MyClientId))] 
public interface IFrameworkBaseService 
{ 
    [OperationContract] 
    void InitializeConnection(IClientID clientID); 
}