Question

我正在使用Visual Studio 2010的Beta 2版本开始学习使用WF4，并且遇到了持久性问题。在下面的代码中，如果我使用WorkflowApplication对象的注释掉的创建，持久性工作正常。如果我使用下面未注释的创建，我传递一个字典用于我想要传入的参数，那么持久性就会中断。任何想法为什么会这样，以及如何解决它？

        List<Approver> approversRequired = new List<Approver>();
        approversRequired.Add(new Approver("Dept Manager"));
        approversRequired.Add(new Approver("Center Manager"));

        Dictionary<String, Object> wfArguments = new Dictionary<string, object>();
        wfArguments.Add("ApproversRequired", approversRequired);

        //WorkflowApplication workflowApp = new WorkflowApplication(
        //    new WebCARSWorkflow());

        WorkflowApplication workflowApp = new WorkflowApplication(
            new WebCARSWorkflow(), wfArguments);

        InstanceStore instanceStore = new SqlWorkflowInstanceStore(
            @"Data Source=.\SQLEXPRESS;Integrated Security=True;Initial Catalog=WorkflowInstanceStore");
        InstanceView view = instanceStore.Execute(
            instanceStore.CreateInstanceHandle(), new CreateWorkflowOwnerCommand(),
            TimeSpan.FromSeconds(30));
        instanceStore.DefaultInstanceOwner = view.InstanceOwner;

        workflowApp.InstanceStore = instanceStore;

        workflowApp.PersistableIdle = (waie) => PersistableIdleAction.Unload;

        workflowApp.Run();
        WorkflowGuid.Text = workflowApp.Id.ToString();

        workflowApp.ResumeBookmark("RequestSubmitted", "Submitted");

Answer 1

您是否将审批者作为使用Serializable或DataContract属性修饰的参数传入？

您可以使用Aborted回调

查看persitence错误

            workflowApp.Aborted = e => Console.WriteLine(e.Reason);

Windows Workflow Foundation 4.0和持久性

1 个答案: