//信号量
        Semaphore semahoro;
        private void button1_Click(object sender, EventArgs e)
        {
            Thread t = new Thread(new ThreadStart(ThreadPooltemp));
            t.Start();
        }
        private void ThreadPooltemp()
        {
            semahoro = new Semaphore(3, 3);
            var ehs = new List<ManualResetEvent>();
            for (int i = 0; i < 10; i++)
            {
                var m = new ManualResetEvent(false);
                ehs.Add(m);
                ThreadHelper th = new ThreadHelper();
                th.id = i;

                ThreadPool.QueueUserWorkItem(h =>
                {
                    semtemp(th);
                    m.Set();
                });
            }
            //第一种方式等待
            WaitHandle.WaitAll(ehs.ToArray());
            //第二种方式等待
            foreach (var m in ehs)
            {
                m.WaitOne();
            }
            MessageBox.Show("ThreadPool >>> ok!");
        }
        public void semtemp(ThreadHelper thh)
        {
            semahoro.WaitOne();
            Run(thh);
            semahoro.Release(1);
        }
        private void Run(ThreadHelper mny)
        {

            this.Invoke(new EventHandler(delegate
             {

                 textBox1.AppendText(mny.id.ToString() + "\r\n");

             }));
            Thread.Sleep(2000);
            //第二种委托
            //this.Invoke(new MethodInvoker(delegate
            //{
            //    dataGridView1.Rows[row].Cells[cll].Value = http://www.mamicode.com/con;>//}));
        }

       //信号量
        Semaphore semahoro;
        private void button2_Click(object sender, EventArgs e)
        {
            Thread th = new Thread(new ThreadStart(delegate
            {
                sem();
            }));
            th.IsBackground = true;
            th.Start();
        }
        public void sem()
        {
            semahoro = new Semaphore(3, 3);
            var ehs = new List<ManualResetEvent>();
            for (int i = 0; i < 10; i++)
            {
                var m = new ManualResetEvent(false);
                ehs.Add(m);
                ThreadHelper thh = new ThreadHelper();
                thh.id = i;
                Thread th = new Thread(new ThreadStart(delegate
                {
                    semtemp(thh);
                    m.Set();
                }));
                th.IsBackground = true;
                th.Start();
            }
            //第一种方式等待
            WaitHandle.WaitAll(ehs.ToArray());
            //第二种方式等待
            foreach (var m in ehs)
            {
                m.WaitOne();
            }
            this.Invoke(new MethodInvoker(delegate
            {
                MessageBox.Show(this, "Semaphore >>> ok!");
            }));
        }
        public void semtemp(ThreadHelper thh)
        {
            semahoro.WaitOne();
            Run(thh);
            semahoro.Release(1);
        }
        private void Run(ThreadHelper mny)
        {

            this.Invoke(new EventHandler(delegate
            {

                textBox1.AppendText(mny.id.ToString() + "\r\n");

            }));
            Thread.Sleep(2000);
            //第二种委托
            //this.Invoke(new MethodInvoker(delegate
            //{
            //    dataGridView1.Rows[row].Cells[cll].Value = http://www.mamicode.com/con;>//}));
        }