IDispatchMessageInspector.BeforeSendReply(Message, Object) IDispatchMessageInspector.BeforeSendReply(Message, Object) IDispatchMessageInspector.BeforeSendReply(Message, Object) IDispatchMessageInspector.BeforeSendReply(Message, Object) Method

Definition

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 :  * obj -> unit
Public Sub BeforeSendReply (ByRef reply As Message, correlationState As Object)

Parameters

reply
Message Message Message Message

The reply message. This value is null if the operation is one way.

correlationState
Object Object Object Object

The correlation object returned from the AfterReceiveRequest(Message, IClientChannel, InstanceContext) method.

Examples

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

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

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>

Remarks

Use the BeforeSendReply method to perform custom behavior prior to sending the return message. 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.

Applies to