从WCF restful响应中删除xml命名空间

[ServiceBehavior(InstanceContextMode = InstanceContextMode.Single, ConcurrencyMode = ConcurrencyMode.Multiple)]
public class MyService : IMyService
{
    [OperationContract]
    [WebGet(ResponseFormat = WebMessageFormat.Xml)]
    public MyData GetData()
    {
        return new MyData { Property1 = "value1", Property2 = "value2" };
    }
}

[DataContract(Namespace = "")]
public class MyData
{
    [DataMember]
    public string Property1 { get; set; }

    [DataMember]
    public string Property2 { get; set; }
}

  <behaviors>
   <endpointBehaviors>
      <behavior name="RestBehavior">
        <webHttp />
      </behavior>
    </endpointBehaviors>
  </behaviors>
 <services>
   <service name="MyService">
     <endpoint address="" behaviorConfiguration="RestBehavior" binding="webHttpBinding" contract="IMyService" />
    </service>
  </services>
</system.serviceModel>