IReceiveMessageCallback.OnReceiveMessage Método

Definição

Namespace:

System.ServiceModel.Activities

Assembly:

System.ServiceModel.Activities.dll

Executado quando uma mensagem de serviço é recebida.

public:
 void OnReceiveMessage(System::ServiceModel::OperationContext ^ operationContext, System::Activities::ExecutionProperties ^ activityExecutionProperties);

public void OnReceiveMessage (System.ServiceModel.OperationContext operationContext, System.Activities.ExecutionProperties activityExecutionProperties);

abstract member OnReceiveMessage : System.ServiceModel.OperationContext * System.Activities.ExecutionProperties -> unit

Public Sub OnReceiveMessage (operationContext As OperationContext, activityExecutionProperties As ExecutionProperties)

Parâmetros

operationContext

OperationContext

O contexto da operação na qual a mensagem é recebida.

activityExecutionProperties

ExecutionProperties

O conjunto de propriedades de execução disponíveis no fluxo de trabalho.

Exemplos

O exemplo a seguir mostra como implementar a IReceiveMessageCallback interface para acessar um cabeçalho de mensagem quando uma mensagem é recebida.

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

    public void OnReceiveMessage(System.ServiceModel.OperationContext operationContext, System.Activities.ExecutionProperties activityExecutionProperties)
    {
        try
        {
            Guid instanceId = operationContext.IncomingMessageHeaders.GetHeader<Guid>(HeaderName, HeaderNS);
            Console.WriteLine("Received a message from a workflow with instanceId = {0}", instanceId);
        }
        catch (MessageHeaderException)
        {
            Console.WriteLine("This message must not be from a workflow.");
        }
    }
}