IClientMessageInspector不显示枚举类型

Question

像那样的MyMessageInspector

public class MyMessageInspector : IClientMessageInspector
{
    public string LastRequestXML { get; private set; }
    public string LastResponseXML { get; private set; }

    public void AfterReceiveReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
    {
        LastResponseXML = reply.ToString();
    }

    public object BeforeSendRequest(ref System.ServiceModel.Channels.Message request, System.ServiceModel.IClientChannel channel)
    {
        LastRequestXML = request.ToString();
        return request;
    }
}

我有ClientCredentials

ClientCredentials =
{
    UserName =
    {
        UserName = "usr",
        Password = "pass"
    }
}

在请求标题之前，我添加了此检查器。 soapClient是我的Web服务客户端对象

soapClient.Endpoint.Behaviors.Add(InspectorBehavior);

我正在创建我的肥皂请求标题，如下所示

requestHeader.cC = "Something";
requestHeader.cU = "Something";
requestHeader.channel = WebService.ChannelType.WEB;
requestHeader.aC = "Something";
requestHeader.ap = "Something";
requestHeader.ag = "Something";
requestHeader.cTI = "Something";
requestHeader.languageCode = LanguageCodeType.TR;

我添加了网络服务：参考资料 - ＆gt;添加服务参考

这是InspectorBehavior LastRequestXML返回

<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/">
  <s:Header>
    <Action s:mustUnderstand="1" xmlns="http://schemas.microsoft.com/ws/2005/05/addressing/none">http://..blablaRequest</Action>
  </s:Header>
  <s:Body xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <WebService xmlns="http://..ws/">
      <requestHeader xmlns="">
        <cCxmlns="http://..requestHeader">Something</cC>
        <cU xmlns="http://..requestHeader">Something</cU>
        <aC xmlns="http://..requestHeader">Something</aC>
        <ap xmlns="http://..requestHeader">Something</ap>
        <ag xmlns="http://..requestHeader">Something</ag>
        <cTI xmlns="http://..requestHeader">Something</cTI>
      </requestHeader>
      ...
    </WebService>
  </s:Body>
</s:Envelope>

那么为什么enum类型的channel和languageCode没有显示在检查器上？我在调用我的网络服务时收到此错误代码：

System.ServiceModel.CommunicationException: 'Server returned an invalid SOAP Fault.  Please see InnerException for more details.'

我因为枚举类型而思考？