解析Silverlight调用WCF/Rest异常的解决方法

[ServiceContract]
public interface IService1
{
    [OperationContract]
    string GetData(int value);
}

public class Service1 : IService1
{
    public string GetData(int value)
    {
        int i = 0;
        int j = 5 / i;
        return string.Format("You entered: {0}", value);
    }
}

<system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name="ServiceBehavior">
          <serviceDebug includeExceptionDetailInFaults="true" />
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <services>
      <service behaviorConfiguration="ServiceBehavior" name="WcfService1.Service1">
      </service>
    </services>
  </system.serviceModel>

private void Button_Click(object sender, RoutedEventArgs e)
{
     Service1Client client = new ServiceReference1.Service1Client();

     client.GetDataCompleted += new EventHandler<GetDataCompletedEventArgs>(client_GetDataCompleted);
     client.GetDataAsync(35); //Try GetData
}

void client_GetDataCompleted(object sender, ServiceReference1.GetDataCompletedEventArgs e)
{
}

public App()
        {
            bool bRegisterPrefix = WebRequest.RegisterPrefix(http://localhost:9541/,

WebRequestCreator.ClientHttp);
            //other Code
        }

 <system.serviceModel>

    <behaviors>

      <endpointBehaviors>
        <behavior name="EndpointBehavior">
          <webHttp helpEnabled="true" defaultOutgoingResponseFormat="Json"
          faultExceptionEnabled="true" />
        </behavior>
      </endpointBehaviors>

      <serviceBehaviors>
        <behavior name="ServiceBehavior">
          <serviceDebug includeExceptionDetailInFaults="true" />
          <serviceMetadata httpGetEnabled="true" />
        </behavior>
      </serviceBehaviors>

    </behaviors>

    <services>
      <service behaviorConfiguration="ServiceBehavior" name="WcfService1.Service1">
        <endpoint behaviorConfiguration="EndpointBehavior" binding="webHttpBinding"
        bindingConfiguration="" name="Rest" contract="WcfService1.IService1" />
      </service>
    </services>

  </system.serviceModel>

public class Service1 : IService1
        {
            [WebGet()]
            public string GetData(int value)
            {
                int i = 0;
                int j = 5 / i;

                return string.Format("You entered: {0}", value);
            }
        }

private void btnRest_Click(object sender, RoutedEventArgs e)
        {
            WebClient wc = new WebClient();

            wc.DownloadStringCompleted += new DownloadStringCompletedEventHandler(

wc_DownloadStringCompleted);
            wc.DownloadStringAsync(new Uri("http://localhost:9541/Service1.svc/GetData?value=3"));
        }

        void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            if (e.Error != null)
            {
                throw e.Error;
            }
        }

DataContractSerializer serializer = new DataContractSerializer(
typeof(FaultException));

//object deserializerObject = serializer.ReadObject(errorStream);
object deserializerObject = serializer.ReadObject(XmlReader.Create(errorStream),false);

public class SLFaultException : Exception
        {
            public ExceptionDetail Detail { get; set; }

            public SLFaultException() { }
            public SLFaultException(string message) : base(message) { }
            public SLFaultException(string message, ExceptionDetail detail)
                : base(message)
            {
                Detail = detail;
            }
        }

void wc_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            if (e.Error != null)
            {
                if (e.Error is WebException)
                {
                    WebResponse errorResponse = ((WebException)e.Error).Response;

                    Stream errorStream = errorResponse.GetResponseStream();

                    XElement rootElement = XElement.Load(errorStream);
                    XElement detailElement = rootElement
                    .Descendants()
                    .First(el => el.Name.LocalName == "ExceptionDetail");

                    DataContractSerializer serializer = new DataContractSerializer(
                    typeof(ExceptionDetail));
                    ExceptionDetail exceptionDetail = (ExceptionDetail)serializer.ReadObject(

detailElement.CreateReader(), true);

                    SLFaultException faultException = new SLFaultException(

exceptionDetail.Message, exceptionDetail);

                    throw faultException;
                }
            }
        }