如何显示一个消息框，询问用户是否真的要退出 cmd 窗口？

Question

我有一个在 windows cmd 中运行的简单 C# 控制台应用程序。 当用户单击“X”关闭按钮退出程序时，如何使其显示确认消息框？ 就像在 javascript 中一样，confirm("Do you really want to exit??")

Answer 1

试试这个代码：

[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:
           DialogResult dialogResult = MessageBox.Show("Do you really want to exit??", "Title", MessageBoxButtons.YesNo);
           if (dialogResult == DialogResult.Yes)
               Environment.Exit(0);
           return true;
       default:
       return false;
   }
}

static void Main(string[] args)
{
    _handler += new EventHandler(Handler);
    SetConsoleCtrlHandler(_handler, true);
    Console.ReadLine();
}