线程中show 窗口的有关问题

线程中show 窗口的问题

  while (ServerRun)

            {

                try

                {

                    using (HttpWebResponse response = HttpWeb.HttpWebResponseUtility.CreatePostHttpResponse(url, para2, cookie))

                    {

                        if (response != null && response.StatusCode == HttpStatusCode.OK)

                        {

                            string result = HttpWeb.HttpWebResponseUtility.GetData(response, Encoding.UTF8);

  AlertLib.AlertForm f = new AlertLib.AlertForm();

                                        f.Show(result , "提示", AlertLib.AlertForm.ShowWay.Fade, 300, 200, 200, 3000, 500);

                         

                        }                     

                    }

                }

                catch (System.Exception ex)

                {

                   

                }

                Thread.Sleep(10000);

                Application.DoEvents(); 

              

                //GC.Collect();

            }

现在碰到2个问题 
1. 窗口老是处于 未响应状态
2. show出来的窗口不能处于桌面的最顶端

请问怎么解决
------解决方案--------------------
不要在先线程中访问UI，用Invoke调用
http://www.microsoft.com/china/MSDN/library/enterprisedevelopment/softwaredev/misMultithreading.mspx?pf=true
  
*****************************************************************************
http://feiyun0112.cnblogs.com/
------解决方案--------------------
某个窗体或控件.Invoke(new Action(() => f.Show(result , "提示", AlertLib.AlertForm.ShowWay.Fade, 300, 200, 200, 3000, 500));
------解决方案--------------------

    /// <summary>

    /// 替代使用InvokeRequired

    /// </summary>

    static class ControlExtensions

    {

        public delegate void ActionShow();

        /// <summary>

        /// 从worker thread 调用UI Thread的控件的方法

        /// </summary>

        /// <param name="control"></param>

        /// <param name="code"></param>

        static public void UIThread(this Control control, ActionShow code)

        {

            if (control.InvokeRequired)

            {