WCF MessageContract格式问题

Question

我有一个MessageContact的WCF定义和客户端调用函数的问题。

场景；客户端使用字符串类型引用ID调用服务，服务器响应AudioObject类型的实例。AudioObject由流( MessageBodyMember )和FormatObject ( MessageHeader )组成。

下面是WCF代码片段。

[ServiceContract]
public interface IAudioStreamService
{
    [OperationContract]
    AudioObject GetAudioDataStream(StringMessage RefID);
}

//StringMessageContract
[MessageContract]
public class StringMessage
{
    [MessageBodyMember]
    public string Name;
}

[MessageContract]
public class AudioObject
{
    Stream _audioStream;
    AudioFormat _audioFormat;

    [MessageBodyMember (Order=1)]
    public Stream AudioStream
    {
        get { return _audioStream; }
        set { _audioStream = value; }
    }

    [MessageHeader(MustUnderstand=true)]
    public AudioFormat AudioFormat
    {
        get { return _audioFormat; }
        set { _audioFormat = value; }
    }
}

[DataContract]
public class AudioFormat
{
    int _nChannels;
    int _nKilloBitsPerSec;
    int _nSamplesPerSec;

    [DataMember(Name="nChannels", Order=0, IsRequired=true)]
    public int nChannels
    {
        get { return _nChannels; }
        set { _nChannels = value; }
    }
    [DataMember(Name = "nKilloBitsPerSec", Order = 1, IsRequired = true)]
    public int nKilloBitsPerSec
    {
        get { return _nKilloBitsPerSec; }
        set { _nKilloBitsPerSec = value; }
    }
    [DataMember(Name = "nSamplesPerSec", Order = 2, IsRequired = true)]
    public int nSamplesPerSec
    {
        get { return _nSamplesPerSec; }
        set { _nSamplesPerSec = value; }
    }
}

客户端代码如下，

BasicHttpBinding binding = new BasicHttpBinding();
binding.MaxReceivedMessageSize = 176160768;                       
EndpointAddress endpointAddress = new EndpointAddress("URLToService");
AudioStreamServiceClient client = new AudioStreamServiceClient(binding, 
endpointAddress);
    AudioFormat audioFormat = client.GetAudioDataStream("000", out serverStream); 

以上代码运行良好。但问题是

为了符合OperationContract，的格式，我期望客户机代码如下所示，

AudioObject audioObject = client.GetAudioDataStream("0000");

但是，我的ServiceReference以相反的方式生成了客户机存根(如代码所示)。有人能解释一下这件事的原因吗。

Answer 1

您可以通过从ClientBase派生类来自己编写客户端，或者编写具有您选择的方法签名的扩展方法。