C#多线程のSemaphore（信号量，负责协调各个线程）

namespace WpfApplication6
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {

        static SemaphoreSlim semLim = new SemaphoreSlim(3); //3表示最多只能有三个线程同时访问

        public MainWindow()
        {
            InitializeComponent();
            ConsoleManager.Show();//打开控制台窗口  
        }

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            for (int i = 0; i < 10; i++)
            {
                new Thread(SemaphoreTest).Start();
            }
            Console.Read();
        }

        static void SemaphoreTest()
        {
            semLim.Wait();
            Console.WriteLine("线程" + Thread.CurrentThread.ManagedThreadId.ToString() + "开始执行");
            Thread.Sleep(2000);
            Console.WriteLine("线程" + Thread.CurrentThread.ManagedThreadId.ToString() + "执行完毕");
            semLim.Release();
        }
    }
}