从实例存储重新加载工作流时更新工作流变量

Question

开始我的工作流程并坚持使用此代码：

 public void StartAndUnloadInstance(Activity WorkflowName, IDictionary<string, object> **parameters**)
    {
        sqlWorkflowInstanceStore = SetupSqlpersistenceStore();
        AutoResetEvent waitHandler = new AutoResetEvent(false);
        WorkflowApplication wfApp = new WorkflowApplication(WorkflowName,parameters);           
        wfApp.InstanceStore = sqlWorkflowInstanceStore;
        wfApp.PersistableIdle = (e) =>
            {

                return PersistableIdleAction.Unload;
            };
        wfApp.Unloaded = (e) =>
        {
            waitHandler.Set();
        };

        wfApp.OnUnhandledException = (e) =>
            {

                wfApp.Abort();
                waitHandler.Dispose();
                waitHandler.Set();
                throw new Exception();
            };
        wfApp.Run();

        waitHandler.WaitOne();
        wfApp.Unload();

    }

我将参数值传递给工作流程如下：

var cwobj = new Dictionary<XName, object>();

        cwobj.Add("ContractorId", contractorId);
        cwobj.Add("OfferPrice", offerPrice);
        cwobj.Add("Description", description);
        cwobj.Add("RequestNumber", requestNumber);
        cwobj.Add("RequestTitle", requestTitle);
        cwobj.Add("ComponentId", componentId);

当我开始工作流程并坚持认为我得到了所有论证的价值 WorkflowDataContext，现在我想为参数发送新值，但我不知道为什么让我持久的旧参数值