.net C# 跨越线程调用窗体上的控件一个完整的例子

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Drawing.Drawing2D;
using System.Threading;

namespace Test
...{
    public partial class Form1 : Form
    ...{
        public Form1()
        ...{
            InitializeComponent();
        }
        private Thread myThread;
        private void RunsOnWorkerThread()
        ...{



            for (int i = 0; i < 100; i++)
            ...{

                ShowProgress(Convert.ToString(i) + "%", i);

                Thread.Sleep(100);

            }

        }

        public void ShowProgress(string msg, int percentDone)
        ...{

            // Wrap the parameters in some EventArgs-derived custom class:

            System.EventArgs e = new MyProgressEvents(msg, percentDone);

            object[] pList = ...{ this, e };



            BeginInvoke(new MyProgressEventsHandler(UpdateUI), pList);

        }

        private delegate void MyProgressEventsHandler(object sender, MyProgressEvents e);

        private void UpdateUI(object sender, MyProgressEvents e)
        ...{

            this.label1.Text = e.Msg;

            this.progressBar1.Value = e.PercentDone;

        }

        public class MyProgressEvents : EventArgs
        ...{

            public string Msg;

            public int PercentDone;

            public MyProgressEvents(string msg, int per)
            ...{

                Msg = msg;

                PercentDone = per;

            }

        }

        //开始线程
        private void button1_Click(object sender, EventArgs e)
        ...{
            myThread = new Thread(new ThreadStart(RunsOnWorkerThread));
            myThread.Start();

        }




        private void button2_Click(object sender, EventArgs e)
        ...{
            if (myThread != null && myThread.IsAlive)
                myThread.Suspend();//线程挂起
            myThread.Priority = ThreadPriority.Lowest;
        }
        private void button3_Click(object sender, EventArgs e)
        ...{
            if (myThread != null && myThread.IsAlive)               
                myThread.Resume();//继续线程
        }
        private void button4_Click(object sender, EventArgs e)
        ...{
            if (myThread != null && myThread.IsAlive)
                myThread.Abort();//线程终止
        }

    }
}

 参见://http://blog.csdn.net/chendazhi/archive/2006/05/09/715064.aspx