C# 异步/线程

参考:https://www.cnblogs.com/wcrBlog/p/11690460.html

   
public static void
  BeginCollection() {
              
            //var  manualRestEventA = new ManualResetEvent(false);
            //Thread thread = new Thread(ThreadMethod);     //执行的必须是无返回值的方法
            //thread.Name = "子线程1";
            //var thread2 = new Thread(ThreadMethod);
            //thread2.Name = "子线程2";

            //thread.Start("子线程1");                       //在此方法内传递参数，类型为object，发送和接收涉及到拆装箱操作
            //thread2.Start("子线程2");
            //manualRestEventA.WaitOne();

            var manualResetEventList=new List<ManualResetEvent>();
            for (var i = 0; i < 10; i++) {
                var mre=new ManualResetEvent(false);
                manualResetEventList.Add(mre);
                ThreadPool.QueueUserWorkItem(ThreadMethod, new {id = i, url = "www",mre});
            }

            WaitHandle.WaitAll(manualResetEventList.ToArray());

            Console.WriteLine("主线程结束");
       
        }
        public static void ThreadMethod(object parameter) //方法内可以有参数，也可以没有参数
        {
            Console.WriteLine($"parameter:{parameter}  { ((dynamic)parameter).url}");
            Console.WriteLine("{0}开始执行。", ((dynamic)parameter).id);
            var result = 0;
            for (int i = 0; i < 1000000000; i++) {
                result += i;
            }

            ((dynamic) parameter).mre.Set();
            Console.WriteLine($"线程{((dynamic)parameter).id}执行完毕");
        }