如何在使用XAMLX服务时挂钩WF4 WorkflowRuntime事件

Question

我目前正在使用BehaviorExtensionElement加载ServiceDehavior，其中ApplyDispatchBehavior方法设置为：

    public void ApplyDispatchBehavior(ServiceDescription serviceDescription, System.ServiceModel.ServiceHostBase serviceHostBase)
    {
        WorkflowServiceHost host = serviceHostBase as WorkflowServiceHost;
        if (host != null)
        {
            UnityService.CreateContainer();
            host.WorkflowExtensions.Add<IUnityContainer>(delegate { return UnityService.CreateChildContainer(); });

            System.Diagnostics.Debug.WriteLine("NotificationService : Adding extension");

            WorkflowRuntimeBehavior wfbehavior = serviceDescription.Behaviors.Find<WorkflowRuntimeBehavior>();
            WorkflowRuntime runtime = wfbehavior.WorkflowRuntime;

            runtime.WorkflowStarted += runtime_WorkflowStarted;
            runtime.WorkflowCreated += runtime_WorkflowCreated;

            runtime.WorkflowUnloaded += runtime_WorkflowUnloaded;
            runtime.WorkflowSuspended += runtime_WorkflowSuspended;

            runtime.WorkflowCompleted += runtime_WorkflowCompleted;
            runtime.WorkflowAborted += runtime_WorkflowAborted;
            runtime.WorkflowTerminated += runtime_WorkflowTerminated;
        }
    }

没有触发任何事件，只是说我在这个特定场景中引用运行时实例的方式是错误的。

有人知道这样做的方法吗？提前谢谢。

Answer 1

WorkflowRuntime和WorkflowRuntimeBehavior是WF3工件，但您的问题被标记为WF4，因此我假设您使用的是WF4。

在WF4中，执行此操作的方法是使用自定义TrackingParticipant并将其添加到WorkflowServiceHost的WorkflowExtensions集合。