c#winform多线程与进度控制

Question

目的：界面不停刷新且StartThread同时执行
timer1是winform.Timer，在tick事件刷新进度，但点击按钮后等到MessageBox.Show("ddd");才看到点点效果。为什么？

    private void button1_Click(object sender, EventArgs e)
    {
        timer1.Enabled = true;
        Thread fThread = new Thread(new ThreadStart(StartThread));//开辟一个新的线程
        fThread.Start();
        fThread.Join();
        MessageBox.Show("ddd");

}

    private void Timer1_Tick(object sender, EventArgs e)
    {
        if(miIndex > 8)
        {
            miIndex = 0;
        }
        label1.Text = "".PadLeft(miIndex,'.')+"。"+ "".PadLeft(8 - miIndex, '.');
        miIndex++;
    }
    private void StartThread()
    {
        try
        {
            Application.DoEvents();
            int i = 0;
            while (i < 999999999)
            {
                i++;
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            mbFinish = true;
        }

    }

Answer 1

http://download.csdn.net/detail/caozhy/4832657