using System;using System.Runtime.InteropServices;using System.Threading;using System.Diagnostics;namespace ConsoleApplication2{    public delegate bool ConsoleCtrlDelegate(int dwCtrlType);    class Program    {        [DllImport("kernel32.dll")]        private static extern bool SetConsoleCtrlHandler(ConsoleCtrlDelegate handlerRoutine, bool add);        private const int CtrlCEvent = 0;//CTRL_C_EVENT = 0;//一个Ctrl+C的信号被接收，该信号或来自键盘，或来自GenerateConsoleCtrlEvent    函数           private const int CtrlBreakEvent = 1;//CTRL_BREAK_EVENT = 1;//一个Ctrl+Break信号被接收，该信号或来自键盘，或来自GenerateConsoleCtrlEvent    函数          private const int CtrlCloseEvent = 2;//CTRL_CLOSE_EVENT = 2;//当用户系统关闭Console时，系统会发送此信号到此           private const int CtrlLogoffEvent = 5;//CTRL_LOGOFF_EVENT = 5;//当用户退出系统时系统会发送这个信号给所有的Console程序。该信号不能显示是哪个用户退出。           private const int CtrlShutdownEvent = 6;//CTRL_SHUTDOWN_EVENT = 6;//当系统将要关闭时会发送此信号到所有Console程序           [STAThread]        static void Main(string[] args)        {            //    TODO:    在此处添加代码以启动应用程序               Program cl = new Program();        }        public Program()        {            if (SetConsoleCtrlHandler(new ConsoleCtrlDelegate(HandlerRoutine), true))            {                Console.WriteLine("Set    SetConsoleCtrlHandler    success!!");            }            else            {                Debug.WriteLine("Set    SetConsoleCtrlHandler    Error!!");                //AsReportFile.WriteFile("", "test.txt", "who close?");            }            Console.ReadLine();        }        bool HandlerRoutine(int ctrlType)        {            Console.WriteLine("Set    SetConsoleCtrlHandler    success!!");            Console.WriteLine("Set    SetConsoleCtrlHandler    success!!");            Console.WriteLine("Set    SetConsoleCtrlHandler    success!!");            Console.WriteLine("Set    SetConsoleCtrlHandler    success!!");            Console.WriteLine("Set    SetConsoleCtrlHandler    success!!");            Console.WriteLine("Set    SetConsoleCtrlHandler    success!!");            Console.WriteLine("Set    SetConsoleCtrlHandler    success!!");            switch (ctrlType)            {                case CtrlCEvent: System.Console.WriteLine("Ctrl+C keydown"); break;                case CtrlBreakEvent: System.Console.WriteLine("Ctrl+Break keydown"); break;                case CtrlCloseEvent: System.Console.WriteLine("window closed"); break;                case CtrlLogoffEvent: System.Console.WriteLine("log off or shut down"); break;                case CtrlShutdownEvent: System.Console.WriteLine("system shut down"); break;                default: System.Console.WriteLine(ctrlType.ToString()); break;            }            for (int i = 0; i < 10; i++)            {                Console.WriteLine("i    is:{0}", i);                Thread.Sleep(1000);            }            return false;        }    }}