Question

有人知道如何在Windows中的c＃中的控制台中对ctrl + c事件做出反应吗？

这个问题：Capture console exit C#说明了怎么做，但是我已经尝试了，它只捕获当用户点击控制台窗口顶部的关闭X时的事件。

当用户键入ctrl + c时，没有任何反应，调试时它甚至都没有命中处理程序。

由于

这是我的代码

namespace EventCloseConsole
{
    using System.Runtime.InteropServices;
    using System;

    class Program
    {
        [DllImport("Kernel32")]
        private static extern bool SetConsoleCtrlHandler(EventHandler handler, bool add);

        private delegate bool EventHandler(CtrlType sig);
        static EventHandler _handler;

        enum CtrlType
        {
            CTRL_C_EVENT = 0,
            CTRL_BREAK_EVENT = 1,
            CTRL_CLOSE_EVENT = 2,
            CTRL_LOGOFF_EVENT = 5,
            CTRL_SHUTDOWN_EVENT = 6
        }

        private static bool Handler(CtrlType sig)
        {
            switch (sig)
            {
                case CtrlType.CTRL_C_EVENT:
                case CtrlType.CTRL_LOGOFF_EVENT:
                case CtrlType.CTRL_SHUTDOWN_EVENT:
                case CtrlType.CTRL_CLOSE_EVENT:

                    Console.WriteLine("Closing");
                    System.Threading.Thread.Sleep(500);
                    return false;
                default:
                    return true;
            }
        }

        static void Main(string[] args)
        {

            _handler += new EventHandler(Handler);
            SetConsoleCtrlHandler(_handler, true);
            Console.ReadLine();


        }
    }
}

Answer 1

这适用于Windows 7.使用x按钮关闭秘密是变量static ConsoleEventDelegate _d

private static void Main(string[] args)
{
    ConsoleEventHooker.Closed += ConsoleEventHooker_Closed;
}

static void ConsoleHooker_Closed(object sender, EventArgs e)
{
}

ConsoleEventHooker.cs

namespace System
{
    internal static class ConsoleEventHooker
    {
        private static bool _initedHooker;
        private static EventHandler _closed; 
        private static EventHandler _shutdown;
        private static ConsoleEventDelegate _d;

        public static event EventHandler Closed
        {
            add
            {
                Init();
                _closed += value;
            }
            remove { _closed -= value; }
        }

        public static event EventHandler Shutdown
        {
            add
            {
                Init();
                _shutdown += value;
            }
            remove { _shutdown -= value; }
        }

        private static void Init()
        {
            if (_initedHooker) return;
            _initedHooker = true;
            _d = ConsoleEventCallback;
            SetConsoleCtrlHandler(_d, true);
        }

        private static bool ConsoleEventCallback(CtrlTypes eventType)
        {
            if (eventType == CtrlTypes.CTRL_CLOSE_EVENT)
            {
                if(_closed != null) _closed(null,new EventArgs());
            }

            if (eventType == CtrlTypes.CTRL_SHUTDOWN_EVENT)
            {
                if (_shutdown != null) _shutdown(null, new EventArgs());
            }
            return false;
        }

        // A delegate type to be used as the handler routine 
        // for SetConsoleCtrlHandler.
        delegate bool ConsoleEventDelegate(CtrlTypes ctrlType);

        [DllImport("kernel32.dll", SetLastError = true)]
        private static extern bool SetConsoleCtrlHandler(ConsoleEventDelegate callback, bool add);

    }

    // An enumerated type for the control messages
    // sent to the handler routine.
    public enum CtrlTypes
    {
        CTRL_C_EVENT = 0,
        CTRL_BREAK_EVENT,
        CTRL_CLOSE_EVENT,
        CTRL_LOGOFF_EVENT = 5,
        CTRL_SHUTDOWN_EVENT
    }

Answer 2

您需要将Console.CancelKeyPress事件连接到处理程序。 Here是关于该主题的精彩文章。

在Windows 7中捕获控制台退出C＃

2 个答案: