Silverlight处理WCF异常

将WCF端的异常返回到Silverlight端有两种方法（不提示 远程服务not found,而是具体的错误）

第一种 在App.cs的构造里  bool bRegisterPrefix =WebRequest.RegisterPrefix(http://localhost:9999,WebRequestCreator.ClientHttp);  地址为服务的地址

第二种：  首先在服务里增加如下类文件

public class SilverlightFaultBehavior : BehaviorExtensionElement,IEndpointBehavior

    {

        public void ApplydispatchBehavior(ServiceEndpoint endpoint,Endpointdispatcher endpointdispatcher)

        {

            SilverlightFaultMessageInspector inspector = new SilverlightFaultMessageInspector();

            endpointdispatcher.dispatchRuntime.MessageInspectors.Add(inspector);

        }

        public class SilverlightFaultMessageInspector : IdispatchMessageInspector

        {

            public void BeforeSendReply(ref Message reply,object correlationState)

            {

                if (reply.IsFault)

                {

                    HttpResponseMessageProperty property = new HttpResponseMessageproperty();

                    // Here the response code is changed to 200.

                    property.StatusCode = System.Net.HttpStatusCode.OK;

                    reply.Properties[HttpResponseMessageProperty.Name] = property;

                }

            }

            public object AfterReceiveRequest(ref Message request,IClientChannel channel,InstanceContext instanceContext)

            {

                // Do nothing to the incoming message.

                return null;

            }

	}
 
        // The following methods are stubs and not relevant. 
 
        public void AddBindingParameters(ServiceEndpoint endpoint,BindingParameterCollection bindingParameters)
        {
        }
 
        public void ApplyClientBehavior(ServiceEndpoint endpoint,ClientRuntime clientRuntime)
        {
        }
 
 
        public void Validate(ServiceEndpoint endpoint)
        {
        }
 
        public override System.Type BehaviorType
        {
            get { return typeof(SilverlightFaultBehavior); }
        }
 
        protected override object CreateBehavior()
        {
            return new SilverlightFaultBehavior();
        }
 
    }

 然后，在具体的服务类上加 [ServiceBehavior(IncludeExceptionDetailInFaults = true)] ,如

           [ServiceBehavior(IncludeExceptionDetailInFaults = true)]

    public class Service2 : IService2

    {

        public void DoWork()

        {

            throw new Exception("Customer error!");

        }

    }

最后，修改web.config

  <system.serviceModel>

    <extensions>

           <behaviorExtensions>

                  <add name="silverlightFaults" type="MyWcfServices.SilverlightFaultBehavior,  MyWcfServices, Version=1.0.0.0,  Culture=neutral,PublicKeyToken=null"/>

                           注意：type里，逗号加空格，不然报错 silverlightFaults未注册

</behaviorExtensions>

</extensions>

 <behaviors>

 <endpointBehaviors>

 <behavior name="silverlightFaults">

<silverlightFaults />

</behavior>

 </endpointBehaviors>

 

 <serviceBehaviors>

 <behavior >

 <serviceMetadata httpGetEnabled="true" />

 <serviceDebug includeExceptionDetailInFaults="true" />

</behavior>

 </serviceBehaviors>

</behaviors>

 

 <bindings>

 <basicHttpBinding>

<binding name="customBinding0">

 <binaryMessageEncoding />

 <httpTransport />

 </binding>

 </basicHttpBinding>

</bindings>

 

 

<services>

 <service name="SoloWcfServices">

<endpoint address="" binding="customBinding"

behaviorConfiguration="silverlightFaults"

bindingConfiguration="customBinding0"

contract="SoloWcfServices" />

 </service>

 </services>

<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />

</system.serviceModel>