vsto中的多线程

Question

我在尝试将我的流程放入线程时遇到问题。我希望我的进程在一个子线程中，每当它设置标志真值时，主线程打开UI表单。这是我的代码

public static bool flagThread = false;
    private void btngenerateNew_Click(object sender, RibbonControlEventArgs e)
    {
        supportThread(sender, e);
        int i=1;
        while (i > 0)
        {
            if (flagThread)
            {
                _Document _doc = Globals.ThisAddIn.Application.ActiveDocument;
                IDesignSpecWord2007.UI_Forms.DisplayError c1 = new IDesignSpecWord2007.UI_Forms.DisplayError(IDSApplyTransformations.ArrErrorsDisp, ref Globals.ThisAddIn.Application, ref _doc);
                Globals.ThisAddIn.DispError = c1;
                c1.Show();
                break;
            }
        }
    }
    private void supportThread(object sender, RibbonControlEventArgs e)
    {
        ThreadObject thrdObj = new ThreadObject();
        thrdObj.sender = sender;
        thrdObj.e = e;

        Thread thrStart = new System.Threading.Thread(new ParameterizedThreadStart(createThread));
        thrStart.Start(thrdObj);
    }

我收到错误＆＃34;功能评估被禁用，因为之前的...＆＃34;当我试图访问文档时

docm = Globals.ThisAddIn.docm;