WorkflowRuntime.WorkflowLoaded Événement

Définition

Espace de noms:

System.Workflow.Runtime

Assembly:

System.Workflow.Runtime.dll

Se produit lorsque l'instance de workflow est chargée dans la mémoire.

public:
 event EventHandler<System::Workflow::Runtime::WorkflowEventArgs ^> ^ WorkflowLoaded;

public event EventHandler<System.Workflow.Runtime.WorkflowEventArgs> WorkflowLoaded;

member this.WorkflowLoaded : EventHandler<System.Workflow.Runtime.WorkflowEventArgs> 

Public Event WorkflowLoaded As EventHandler(Of WorkflowEventArgs) 

Type d'événement

EventHandler<WorkflowEventArgs>

Exemples

L'exemple de code suivant montre comment utiliser les fonctionnalités WorkflowRuntime d'un hôte de workflow. Le code associe l'événement WorkflowLoaded à un gestionnaire d'événements, méthode qui est nommée OnWorkflowLoad.

Cet exemple de code fait partie de l’exemple service de persistance personnalisée .

static void Main()
{
    using (WorkflowRuntime workflowRuntime = new WorkflowRuntime())
    {
        try
        {
            // engine will unload workflow instance when it is idle
            workflowRuntime.AddService(new FilePersistenceService(true));

            workflowRuntime.WorkflowCreated += OnWorkflowCreated;
            workflowRuntime.WorkflowCompleted += OnWorkflowCompleted;
            workflowRuntime.WorkflowIdled += OnWorkflowIdle;
            workflowRuntime.WorkflowUnloaded += OnWorkflowUnload;
            workflowRuntime.WorkflowLoaded += OnWorkflowLoad;
            workflowRuntime.WorkflowTerminated += OnWorkflowTerminated;
            workflowRuntime.ServicesExceptionNotHandled += OnExceptionNotHandled;

            workflowRuntime.CreateWorkflow(typeof(PersistenceServiceWorkflow)).Start();

            waitHandle.WaitOne();
        }
        catch (Exception e)
        {
            Console.WriteLine("Exception \n\t Source: {0} \n\t Message: {1}", e.Source, e.Message);
        }
        finally
        {
            workflowRuntime.StopRuntime();
            Console.WriteLine("Workflow runtime stopped, program exiting... \n");
        }
    }
}

Shared Sub Main()

    Using currentWorkflowRuntime As New WorkflowRuntime()
        Try

            ' engine will unload workflow instance when it is idle
            currentWorkflowRuntime.AddService(New FilePersistenceService(True))

            AddHandler currentWorkflowRuntime.WorkflowCreated, AddressOf OnWorkflowCreated
            AddHandler currentWorkflowRuntime.WorkflowCompleted, AddressOf OnWorkflowCompleted
            AddHandler currentWorkflowRuntime.WorkflowIdled, AddressOf OnWorkflowIdled
            AddHandler currentWorkflowRuntime.WorkflowUnloaded, AddressOf OnWorkflowUnloaded
            AddHandler currentWorkflowRuntime.WorkflowLoaded, AddressOf OnWorkflowLoaded
            AddHandler currentWorkflowRuntime.WorkflowTerminated, AddressOf OnWorkflowTerminated
            AddHandler currentWorkflowRuntime.ServicesExceptionNotHandled, AddressOf OnExceptionNotHandled

            currentWorkflowRuntime.CreateWorkflow(GetType(PersistenceServiceWorkflow)).Start()

            waitHandle.WaitOne()

        Catch e As Exception
            Console.WriteLine("Exception \n\t Source: 0} \n\t Message: 1}", e.Source, e.Message)
        Finally
            currentWorkflowRuntime.StopRuntime()
            Console.WriteLine("Workflow runtime stopped, program exiting... \n")
        End Try
    End Using
End Sub

Remarques

L'événement WorkflowLoaded se produit après que le service de persistance a restauré l'instance de workflow, mais avant que le moteur d'exécution de workflow ne commence à exécuter une autre activité.

Pour l'événement WorkflowLoaded, l'expéditeur contient l'objet WorkflowRuntime et l'objet WorkflowEventArgs contient l'objet WorkflowInstance associé à l'événement.

Pour plus d’informations sur la gestion des événements, consultez Gestion et déclenchement d’événements.