重新水化的工作流程抛出 Profile can not be null 异常

Question

我们有一个作为网络服务应用程序的工作流程。我们为每种工作流程类型使用自定义跟踪配置文件。

工作流程序集版本已更改，因此我也更改了配置文件版本。因此，旧的工作流程应该可以正常工作。

现在我启动了工作流运行时，工作流被触发并保存到数据库 一段时间后，我重新启动运行时，工作流程重新水合，但尝试调用工作流程上的事件，它显示异常。

如果工作流引擎未重新启动，则一切正常，没有错误，工作流已完成。

System.Workflow.Activities.EventDeliveryFailedException: Event "Event_111" on interface type "Service.IService" for instance id "4d0b7397-4ce1-49c7-92c6-92405caa8fe4" cannot be delivered. ---> System.ArgumentNullException: Value cannot be null.
Parameter name: profile
   at System.Workflow.Runtime.RTTrackingProfile..ctor(TrackingProfile profile, Activity root, Type serviceType)
   at System.Workflow.Runtime.TrackingProfileManager.CreateProfile(TrackingProfile profile, Type workflowType, Type serviceType)
   at System.Workflow.Runtime.TrackingProfileManager.GetProfile(TrackingService service, Activity workflow, Version versionId)
   at System.Workflow.Runtime.TrackingListenerFactory.GetChannels(Activity schedule, WorkflowExecutor exec, Guid instanceID, Type workflowType, TrackingListenerBroker& broker)
   at System.Workflow.Runtime.TrackingListenerFactory.GetListener(Activity sked, WorkflowExecutor skedExec, TrackingListenerBroker broker)
   at System.Workflow.Runtime.TrackingListenerFactory.GetTrackingListener(Activity sked, WorkflowExecutor skedExec, TrackingListenerBroker broker)
   at System.Workflow.Runtime.TrackingListenerFactory.WorkflowExecutorInitializing(Object sender, WorkflowExecutorInitializingEventArgs e)
   at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   at System.Workflow.Runtime.WorkflowRuntime.WorkflowExecutorCreated(WorkflowExecutor workflowExecutor, Boolean loaded)
   at System.Workflow.Runtime.WorkflowExecutor.ReRegisterWithRuntime(WorkflowRuntime workflowRuntime)
   at System.Workflow.Runtime.WorkflowRuntime.RegisterExecutor(Boolean isActivation, WorkflowExecutor executor)
   at System.Workflow.Runtime.WorkflowRuntime.Load(Guid key, CreationContext context, WorkflowInstance workflowInstance)
   at System.Workflow.Runtime.WorkflowRuntime.GetWorkflow(Guid instanceId)
   at System.Workflow.Activities.WorkflowMessageEventHandler.EventHandler(Object sender, ExternalDataEventArgs eventArgs)
   --- End of inner exception stack trace ---
   at System.Workflow.Activities.WorkflowMessageEventHandler.EventHandler(Object sender, ExternalDataEventArgs eventArgs)
   at RecipeChangeService.RecipeChangeService.MfgEngOrTLApproved(Guid instanceId, ResponseDataObject rdo) in E:\MES\trunk\DotNet\WorkflowDesignProject\WorkflowDesignProject\Workflow Types\RecipeChangeWF\RecipeChangeService.cs:line 64

任何想法，出了什么问题？有两个不同版本的工作流程，但附加到相同的配置文件版本，这可能是问题吗？

Answer 1

我找到了解决方案。跟踪配置文件的版本应与创建跟踪配置文件 xml 时的版本匹配。

TrackingProfile myProfile = new TrackingProfile();
 myProfile.Version = new Version("4.0.0.0");

版本应与存储过程“UpdateTrackingProfile”中使用的版本相同
这解决了我的问题。