WorkflowRuntime.WorkflowLoaded 事件

定義

命名空間:

System.Workflow.Runtime

組件:

System.Workflow.Runtime.dll

在工作流程執行個體載入記憶體中時發生。

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) 

事件類型

EventHandler<WorkflowEventArgs>

範例

下列程式碼範例示範如何從工作流程主機使用 WorkflowRuntime 功能。 此程式碼會使 WorkflowLoaded 與事件處理常式 (名稱為 OnWorkflowLoad 的方法) 產生關聯。

此程式碼範例是 自訂持續性服務 範例的一部分。

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

備註

WorkflowLoaded 會發生在持續性服務已還原工作流程執行個體之後，但在工作流程執行階段引擎開始執行任何活動之前。

對於 WorkflowLoaded 事件，傳送者會包含 WorkflowRuntime，而 WorkflowEventArgs 則包含事件關聯的 WorkflowInstance。

如需處理事件的詳細資訊，請參閱 處理和引發事件。