C # how to get system shutdown or exit messages in command line application

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using System;
using System.Runtime.InteropServices;
using System.Threading;
using System.Windows.Forms;


namespace Demo
{
    class Program
    {
        static void Main(string[] args)
        {
            SetConsoleCtrlHandler(ConsoleCtrlCheck, true);
            Console.WriteLine("CTRL+C,CTRL+BREAK or suppress the application to exit");

            while (!isclosing)
            {
                Thread.Sleep(1000);
            }
        }

        private static bool ConsoleCtrlCheck(CtrlTypes ctrlType)
        {
            // Put your own handling here:

            switch (ctrlType)
            {
                case CtrlTypes.CTRL_C_EVENT:

                    isclosing = true;

                    Console.WriteLine("CTRL+C received!");

                    break;

                case CtrlTypes.CTRL_BREAK_EVENT:

                    isclosing = true;

                    Console.WriteLine("CTRL+BREAK received!");

                    break;

                case CtrlTypes.CTRL_CLOSE_EVENT:

                    isclosing = true;

                    Console.WriteLine("Program being closed!");
                    MessageBox.Show("AHA!");

                    break;

                case CtrlTypes.CTRL_LOGOFF_EVENT:
                case CtrlTypes.CTRL_SHUTDOWN_EVENT:

                    isclosing = true;

                    Console.WriteLine("User is logging off!");

                    break;
            }

            return true;
        }

        #region unmanaged

        // Declare the SetConsoleCtrlHandler function as external and receiving a delegate.

        [DllImport("Kernel32")]

        public static extern bool SetConsoleCtrlHandler(HandlerRoutine Handler, bool Add);

        // A delegate type to be used as the handler routine for SetConsoleCtrlHandler.

        public delegate bool HandlerRoutine(CtrlTypes CtrlType);

        // 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
        }

        #endregion

        private static bool isclosing;
    }
}