Threads
最早的版本，微軟推薦不要再使用Thread了
thread不支持帶返回值的方法
本身也沒有線程回調，但是可以自己做一個

private void btnThreads_Click(object sender, EventArgs e){Stopwatch watch = new Stopwatch();watch.Start();Console.WriteLine();Console.WriteLine("********************btnThread_Click Start 主線程id={0}********************", Thread.CurrentThread.ManagedThreadId);List<Thread> threadList = new List<Thread>();for (int i = 0; i < 5; i++){ParameterizedThreadStart method = o => TestThreadWithoutReturn(o.ToString());Thread thread = new Thread(method);//1. 默認前臺線程：程序退出后，計算任務會繼續thread.IsBackground = true;//2. 后臺線程：程序退出，計算理解結束thread.Start(string.Format("btnThread_Click_{0}", i));threadList.Add(thread);}//for (int i = 0; i < 5; i++)//{// //使用Thread完成多線程回調// int b = i;// ParameterizedThreadStart method = o => TestThreadWithoutReturn(o.ToString());//要多線程執行的任務// Action callback = () => Console.WriteLine("回調 btnAsync_Click_{0}",b);//回調執行的任務// ThreadStart methodAll = new ThreadStart(() =>// {// method.Invoke(string.Format("btnAsync_Click_{0}", b));// callback.Invoke();// });// Thread thread = new Thread(methodAll);// thread.Start();// threadList.Add(thread);//}foreach (var item in threadList ){item.Join(); //主線程等待 }watch.Stop();Console.WriteLine("********************btnThread_Click End 主線程id={0} {1}********************", Thread.CurrentThread.ManagedThreadId, watch.ElapsedMilliseconds);Console.WriteLine();} private void TestThreadWithoutReturn(string name){Console.WriteLine("TestThread Start Name={2},當前線程的id:{0},當前時間為{1}", Thread.CurrentThread.ManagedThreadId, DateTime.Now.ToString("hh:mm:ss:fff"), name);long Sum = 0;for (int i = 1; i < 999999999; i++){Sum += i;}//Thread.Sleep(2000);Console.WriteLine("TestThread End Name={2},當前線程的id:{0},當前時間為{1}", Thread.CurrentThread.ManagedThreadId, DateTime.Now.ToString("hh:mm:ss:fff"), name);}

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轉載于:https://www.cnblogs.com/xiao9426926/p/6429530.html

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