C# WCF:IErrorHandler实现未按指定提供泛型错误

我已经实现了

IErrorHandler

接口的

providdefault

方法，如下所示：

public void ProvideFault(Exception ex, MessageVersion version, ref Message fault)
{
    ResponseModel responseModel = new ResponseModel();
    responseModel.EndDate = DateTime.Now;

    FaultException<ResponseModel> faultEx;

    if (ex is FaultException<ResponseModel>)
    {
        return;
    }
    ServerCoreException coreException = ex as ServerCoreException;
    if (coreException != null)
    {
        ServerCoreException serverCoreException = coreException;
        faultEx = new FaultException<ResponseModel>(responseModel,
        new FaultReason(serverCoreException.Message),
        new FaultCode(serverCoreException.ErrorCode.ToString()));
    }
    else
    {
        faultEx = new FaultException<ResponseModel>(responseModel,
        new FaultReason(ex.Message),
        new FaultCode("-1"));
    }
    MessageFault msgFault = faultEx.CreateMessageFault();
    fault = Message.CreateMessage(version, msgFault, faultEx.Action);
}

但是服务实现内部方法的测试总是失败，抱怨接收到的故障不是

FaultException

类型，而是

FaultException

：

Assert.That(() => client.CreateVersion(request), Throws.TypeOf<FaultException<ResponseModel>>());

Assert.That（（）=>client.CreateVersion（请求），抛出.TypeOf（））；

---

为什么我在客户端接收到的是

FaultException

而不是

FaultException

？

可能相关：@ricardopers谢谢，但我的代码fault=Message.CreateMessage中已经有了（版本，msgFault，faultEx.Action）；正如被接受的答案中所建议的。ResponseModel[DataContract]应用了吗？@Maximus感谢您的时间。是的，我设置了DataContract属性。

Assert.That(() => client.CreateVersion(request), Throws.TypeOf<FaultException<ResponseModel>>());