使用类接口作为wcf服务中的参数

Question

我有WCF服务合同并使用类接口作为参数如下：

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

但是我收到以下错误：

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

任何人都可以帮我解决这个问题

由于 阿夫欣

Answer 1

我认为您为客户端ID传递的具体对象对服务来说是未知的。 您必须使用KnownType - 属性

添加它

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