IDispatchMessageInspector.BeforeSendReply(Message, Object) Methode

Definition

Wird aufgerufen, nachdem der Vorgang zurückgegeben wurde, jedoch bevor die Antwortnachricht gesendet wird.Called after the operation has returned but before the reply message is sent.

public:
 void BeforeSendReply(System::ServiceModel::Channels::Message ^ % reply, System::Object ^ correlationState);
public void BeforeSendReply (ref System.ServiceModel.Channels.Message reply, object correlationState);
abstract member BeforeSendReply : Message * obj -> unit
Public Sub BeforeSendReply (ByRef reply As Message, correlationState As Object)

Parameter

reply
Message

Die Antwortnachricht.The reply message. Dieser Wert ist NULL, wenn es sich um einen unidirektionalen Vorgang handelt.This value is null if the operation is one way.

correlationState
Object

Das von der AfterReceiveRequest(Message, IClientChannel, InstanceContext)-Methode zurückgegebene Korrelationsobjekt.The correlation object returned from the AfterReceiveRequest(Message, IClientChannel, InstanceContext) method.

Beispiele

Im folgenden Codebeispiel wird ein grundlegender IDispatchMessageInspector veranschaulicht, der eine Zeichenfolge in der Konsole ausgibt, wenn er aufgerufen wird.The following code example shows a basic IDispatchMessageInspector that writes a string to the console when it is invoked.

#region IDispatchMessageInspector Members
public object AfterReceiveRequest(ref System.ServiceModel.Channels.Message request, IClientChannel channel, InstanceContext instanceContext)
{
  Console.WriteLine("IDispatchMessageInspector.AfterReceiveRequest called.");
  return null;
}

public void BeforeSendReply(ref System.ServiceModel.Channels.Message reply, object correlationState)
{
  Console.WriteLine("IDispatchMessageInspector.BeforeSendReply called.");
}
#endregion
#Region "IDispatchMessageInspector Members"
    Public Function AfterReceiveRequest(ByRef request As System.ServiceModel.Channels.Message, _
                       ByVal channel As IClientChannel, ByVal instanceContext As InstanceContext) _
                       As Object Implements IDispatchMessageInspector.AfterReceiveRequest
        Console.WriteLine("IDispatchMessageInspector.AfterReceiveRequest called.")
        Return Nothing
    End Function

    Public Sub BeforeSendReply(ByRef reply As System.ServiceModel.Channels.Message, ByVal correlationState As Object) _
    Implements IDispatchMessageInspector.BeforeSendReply
        Console.WriteLine("IDispatchMessageInspector.BeforeSendReply called.")
    End Sub
#End Region

Im folgenden Codebeispiel wird die Implementierung von IServiceBehavior veranschaulicht, das InspectorIDispatchMessageInspector der DispatchRuntime.MessageInspectors-Auflistung hinzufügt.The following code example shows the implementation of an IServiceBehavior that adds the InspectorIDispatchMessageInspector to the DispatchRuntime.MessageInspectors collection.

#region IServiceBehavior Members
public void AddBindingParameters(
  ServiceDescription serviceDescription, 
  ServiceHostBase serviceHostBase, 
  System.Collections.ObjectModel.Collection<ServiceEndpoint> endpoints, 
  BindingParameterCollection bindingParameters
)
{ return; }

public void ApplyDispatchBehavior(ServiceDescription serviceDescription, ServiceHostBase serviceHostBase)
{
  foreach (ChannelDispatcher chDisp in serviceHostBase.ChannelDispatchers)
  {
    foreach (EndpointDispatcher epDisp in chDisp.Endpoints)
    {
      epDisp.DispatchRuntime.MessageInspectors.Add(new Inspector());
      foreach (DispatchOperation op in epDisp.DispatchRuntime.Operations)
        op.ParameterInspectors.Add(new Inspector());
    }
  }
}
#Region "IServiceBehavior Members"
    Public Sub AddBindingParameters(ByVal serviceDescription As ServiceDescription, _
                   ByVal serviceHostBase As ServiceHostBase, ByVal endpoints As  _
                   System.Collections.ObjectModel.Collection(Of ServiceEndpoint), _
                   ByVal bindingParameters As BindingParameterCollection) Implements IServiceBehavior.AddBindingParameters
        Return
    End Sub

    Public Sub ApplyDispatchBehavior(ByVal serviceDescription As ServiceDescription, _
                                     ByVal serviceHostBase As ServiceHostBase) Implements _
                                     IServiceBehavior.ApplyDispatchBehavior
        For Each chDisp As ChannelDispatcher In serviceHostBase.ChannelDispatchers
            For Each epDisp As EndpointDispatcher In chDisp.Endpoints
                epDisp.DispatchRuntime.MessageInspectors.Add(New Inspector())
                For Each op As DispatchOperation In epDisp.DispatchRuntime.Operations
                    op.ParameterInspectors.Add(New Inspector())
                Next op
            Next epDisp
        Next chDisp
    End Sub

Im folgenden Codebeispiel wird veranschaulicht, wie eine Anwendungskonfigurationsdatei verwendet wird, um das Dienstverhalten zu laden, das den InspectorIDispatchMessageInspector einfügt.The following code example shows the use of an application configuration file to load the service behavior that inserts the InspectorIDispatchMessageInspector.

<configuration>
  <system.serviceModel>
    <services>
      <service 
        name="Microsoft.WCF.Documentation.SampleService"
        behaviorConfiguration="metadataSupport">
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8080/SampleService" />
          </baseAddresses>
        </host>
        <endpoint
          address=""
          binding="wsHttpBinding"
          contract="Microsoft.WCF.Documentation.ISampleService"
        />
        <endpoint
           address="mex"
           binding="mexHttpBinding"
           contract="IMetadataExchange"
        />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="metadataSupport">
          <serviceMetadata httpGetEnabled="true" httpGetUrl=""/>
          <serviceInterceptors />
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <extensions>
      <behaviorExtensions>
        <add 
          name="serviceInterceptors" 
          type="Microsoft.WCF.Documentation.InspectorInserter, HostApplication, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null"
        />
      </behaviorExtensions>
    </extensions>
  </system.serviceModel>
</configuration>

Hinweise

Verwenden Sie die BeforeSendReply-Methode, um benutzerdefiniertes Verhalten auszuführen, bevor die Rückgabenachricht gesendet wird.Use the BeforeSendReply method to perform custom behavior prior to sending the return message. correlationState ist das von der AfterReceiveRequest-Methode zurückgegebene Objekt, das Sie verwenden können, um eine Korrelation zwischen eingehenden und ausgehenden Aufrufen zur Unterstützung des Verhaltens herzustellen.The correlationState is the object returned from the AfterReceiveRequest method that you can use to perform correlation between inbound and outbound calls to support your behavior.

Gilt für: