典型的多线程操作界面的例子

 1public partial class Form1 : Form
 2{
 3        public Form1()
 4        {
 5            InitializeComponent();
 6        }
 7        private void button1_Click(object sender, EventArgs e)
 8        {
 9            this.progressBar1.Maximum = 9000;
            progressBar1.Minimum = 0;
            progressBar1.MarqueeAnimationSpeed = 1000;
            Thread tt = new Thread(new ThreadStart(LongProcess));
            tt.IsBackground = true;
            tt.Start();
        }
        delegate void UpProgressDelegate(int value);
        void ProgressIncrease(int value)
        {
            this.progressBar1.Value = value;
        }
        void LongProcess()
        {
            for (int i = 0; i < 9000; i++)
            {
            //Do something 
            Thread.Sleep(1); 
              //Porogress Increase 
            if (progressBar1.InvokeRequired)
            {
                progressBar1.Invoke(new UpProgressDelegate(ProgressIncrease),new object[] { i });
            }
            else
            {
                ProgressIncrease(i);
            }
        }
    } 
}