该怎么让多个线程一同暂停一同继续开始？

[tiandiyuzhou1]

int Count;
        int ShareCount = 3, SingleCount = 0, LastCount = 0;
        string dest = @"E:\Test2\", source = @"E:\Test";
        List<FileInfo> list = new List<FileInfo>();
        StringBuilder sb = new StringBuilder();
        bool stop = false;
        public 多线程()
        {
            if (!Directory.Exists(dest))
                Directory.CreateDirectory(dest);
            DirectoryInfo di = new DirectoryInfo(source);
            foreach (FileInfo f in di.GetFiles())
            {
                list.Add(f);
            }
            SingleCount = list.Count / ShareCount;
            LastCount = list.Count % ShareCount;
            ShareCount = LastCount == 0 ? ShareCount : ShareCount + 1;
            sb.Capacity = list.Count * 15;
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < ShareCount; i++)
            {
                Thread thread = new Thread(new ParameterizedThreadStart(CopyFile));
                thread.Name = "Thread:" + i;
                thread.IsBackground = true;
                thread.Start(i);
            }
            button1.Enabled = false;
        }
        protected void CopyFile(object i)
        {
            int j = (int)i;
            int tempCount = j * SingleCount + SingleCount;
            int totalCount = tempCount > list.Count ? list.Count : tempCount;
            for (int c = j * SingleCount; c < totalCount; c++)
            {
                if (stop)
                {
                    c--;
                    while (stop)
                    {
                        Thread.Sleep(500);
                    }
                }
                else
                {
                    File.Copy(list[c].FullName, dest + list[c].Name, true);
                    Count++;
                    ShowTextBox(list[c].Name + " Count:" + Count + " " + Thread.CurrentThread.Name.PadLeft(9, ' ') + "\r\n");
                    ShowProgress();
                }
            }
        }
        protected void ShowTextBox(string msg)
        {
            if (this.textBox1.InvokeRequired)
            {
                this.textBox1.Invoke(new Action(() => ShowTextBox(msg)));
            }
            else
            {
                sb.Append(msg);
                if (Count % 100 == 0)
                    this.textBox1.Text = sb.ToString();
            }
        }
        protected void ShowProgress()
        {
            if (this.progressBar1.InvokeRequired)
            {
                this.progressBar1.Invoke(new Action(() => ShowProgress()));
            }
            else
            {
                int value = (int)((double)Count / (double)list.Count * 100);
                this.progressBar1.Value = value;
                label1.Text = value + "%";
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            stop = stop == false ? true : false;
        }

for (int i = 0; i < ShareCount; i++)
{
Thread thread = new Thread(new ParameterizedThreadStart(CopyFile));
thread.Name = "Thread:" + i;
thread.IsBackground = true;
thread.Start(i);
}
这里我开了三个线程，当我点击button2的时候想让这三个线程挂起等待，等待唤醒的时候这几个线程才继续工作。这里我不懂怎么挂起线程，现在的做法是
while (stop)
{
Thread.Sleep(500);
}
一直死循环等待，直到stop为false。想真正让线程挂起来，而不是现在这样的，该怎么让线程挂起呢？

[niss]

mark一下,我还不会多线程的复杂编程

[bdmh]

你没有记录thread实例，所以你可以通过全局变量来限制，在线程中判断这个标识
还可参考http://archive.cnblogs.com/a/1554737/

[dd_zhouqian]

这样还是用变量控制？

thread .Suspend();
thread .Resume();