ISendMessageCallback.OnSendMessage(OperationContext) Method

Definition

Namespace:

System.ServiceModel.Activities

Assembly:

System.ServiceModel.Activities.dll

Executed when a service message is sent.

public:
 void OnSendMessage(System::ServiceModel::OperationContext ^ operationContext);

public void OnSendMessage (System.ServiceModel.OperationContext operationContext);

abstract member OnSendMessage : System.ServiceModel.OperationContext -> unit

Public Sub OnSendMessage (operationContext As OperationContext)

Parameters

operationContext

OperationContext

The operation's context under which the message is being sent.

Examples

The following example shows how to implement the ISendMessageCallback interface to a new header to a message before it is sent out on the wire.

class SendInstanceIdCallback : ISendMessageCallback
{
    public const string HeaderName = "InstanceIdHeader";
    public const string HeaderNS = "http://Microsoft.Samples.AccessingOperationContext";

    public Guid InstanceId { get; set; }

    public void OnSendMessage(System.ServiceModel.OperationContext operationContext)
    {
        operationContext.OutgoingMessageHeaders.Add(MessageHeader.CreateHeader(HeaderName, HeaderNS, this.InstanceId));
    }
}