.net让线程支持超时

使用 CancellationTokenSource
代码如下:
private static void TimeoutTest1()
        {
            var cts = new CancellationTokenSource();

            var thread = new Thread(() =>
            {
                Console.WriteLine(String.Format("线程{0}执行中", Thread.CurrentThread.ManagedThreadId));
                Thread.Sleep(10000);
                Console.WriteLine(String.Format("线程{0}执行中", Thread.CurrentThread.ManagedThreadId));
            });

            cts.Token.Register(() =>
            {
                thread.Abort();
            });
            cts.CancelAfter(1000);

            thread.Start();
            thread.Join();

            Console.WriteLine(String.Format("线程{0}的状态：{1}", thread.ManagedThreadId, thread.ThreadState));
        }

这里采用了 Abort 终止了线程，CancellationTokenSource 也支持其它模式，可以去官方看看文档。

使用 Join

代码如下:
private static void TimeoutTest2()
        {
            var thread = new Thread(() =>
            {
                Console.WriteLine(String.Format("线程{0}执行中", Thread.CurrentThread.ManagedThreadId));
                Thread.Sleep(10000);
                Console.WriteLine(String.Format("线程{0}执行中", Thread.CurrentThread.ManagedThreadId));
            });

            thread.Start();
            thread.Join(1000);
            thread.Abort();

            Console.WriteLine(String.Format("线程{0}的状态：{1}", thread.ManagedThreadId, thread.ThreadState));
        }

.net让线程在执行结束后销毁

线程执行完、遇到未处理异常和被终止后就自动不可用了，如果是垃圾，自然会被 GC 给回收，有一点需要说明的是：线程的未处理异常会导致应用程序的终止，一个线程的异常不会自动冒泡到其它线程。