为winform程序注册闪屏（等待窗体）

来自：http://kb.cnblogs.com/a/1609287/

private ProcessForm processForm;
        private void ShowWaitMess()
        {
            try
            {
                processForm.ShowDialog();
            }
            catch (Exception Err)
            {

            }
        } 
        private void DoCloseJob()
        {
            try
            {
                if (!processForm.IsDisposed)
                {
                    processForm.Close();
                }
            }
            catch (Exception Err)
            {

            }
        }
        /// <summary>
        /// 显示窗体
        /// </summary>
        /// <param name="TypeStr"></param>
        /// <param name="TypeTxt"></param>
        public void Show()
        {
            try
            {
                processForm = new ProcessForm();
                Thread upgradeThread = new Thread(new ThreadStart(ShowWaitMess));                
                upgradeThread.Start();
            }
            catch (Exception ex)
            {

            }
        }
        /// <summary>
        /// 关闭窗体
        /// </summary>
        public void Close()
        {
            if (processForm.InvokeRequired)
            {
                processForm.Invoke(new Action(DoCloseJob));
            }
            else
            {
                DoCloseJob();
            }
        }