多线程

信号量控制线程池

        //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 = con;            //}));        }

 信号量构建多线程

 

       //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 = con;            //}));        }

也可以把线程全部加到List集合

//投递完毕,等待线程完成!
for (int i = 0; i < ths.Count; i++)
{
while (ths[i].ThreadState != System.Threading.ThreadState.Stopped)
{
Application.DoEvents();
}
}