WF 4.5应用动态更新异常

Question

用几步创建StateMachine工作流后，我想尝试使用DynamicUpdate。 按照说明，我创建了更新地图，但是当我尝试应用它时，出现以下错误：

System.Activities.dll中发生了类型为'System.Activities.DynamicUpdate.InstanceUpdateException'的未处理异常。其他信息：更新映射与工作流定义不匹配。 请确保这是此定义的正确映射，并且未手动更改序列化映射。

故障排除详细信息：具有所有者“”的IdSpace具有“ 2”个成员； 预期为“ 1”。

如果修改了现有转换的触发器，或者将条件或动作活动重新分配给新的转换，则StateMachine不支持动态更新。

---

我在新版本中所做的就是添加epmty State并将Pointers连接到它。 持久的工作流仍然会给出此例外。

Answer 1

试试看：

public static void UpdateWorkflowDynamic(string xaml)
    {
        StringReader sr = new StringReader(xaml);
        XmlReader xmlReader = XmlReader.Create(sr);
        XamlXmlReaderSettings settings = new XamlXmlReaderSettings
        {
            LocalAssembly = typeof(BookmarkDesign).Assembly
        };
        XamlReader xamlReader = new XamlXmlReader(xmlReader, settings);
        ActivityXamlServicesSettings XamlSettings = new ActivityXamlServicesSettings
        {
            CompileExpressions = true
        };
        Activity newActivity = ActivityXamlServices.Load(xamlReader, XamlSettings);


        sr = new StringReader(xaml);
        xmlReader = XmlReader.Create(sr);
        xamlReader = new XamlXmlReader(xmlReader, settings);
        ActivityBuilder activityBuilder = (ActivityBuilder)XamlServices.Load(ActivityXamlServices.CreateBuilderReader(xamlReader));
        DynamicUpdateServices.PrepareForUpdate(activityBuilder);
        DynamicUpdateMap updateMap = DynamicUpdateServices.CreateUpdateMap(activityBuilder);
        WorkflowIdentity newIdentity = new WorkflowIdentity
        {
            Name = "Update",
            Version = new Version(2, 0, 0, 0)
        };
        WorkflowApplicationInstance instance = WorkflowApplication.GetInstance(Guid.Parse("yourGuid"), GetInstance().InstanceStore);
        WorkflowApplication wfApp = new WorkflowApplication(newActivity, newIdentity);

        wfApp.Load(instance, updateMap);
        wfApp.Unload();
    }