截获控制台程序关闭事件（SetConsoleCtrlHandler)

 1 using System;
 2 using System.Windows.Forms;
 3 using System.Diagnostics;
 4 using System.Runtime.InteropServices;
 5 
 6 namespace ConsoleColsed
 7 {
 8   public delegate bool ConsoleCtrlDelegate(int ctrlType);
 9   class Program
10   {
11     [DllImport("kernel32.dll")]
12     private static extern bool SetConsoleCtrlHandler(ConsoleCtrlDelegate HandlerRoutine, bool Add);
13     //当用户关闭Console时，系统会发送次消息
14     private const int CTRL_CLOSE_EVENT = 2;
15     //Ctrl+C，系统会发送次消息
16     private const int CTRL_C_EVENT = 0;
17     //Ctrl+break，系统会发送次消息
18     private const int CTRL_BREAK_EVENT = 1;
19     //用户退出（注销），系统会发送次消息
20     private const int CTRL_LOGOFF_EVENT = 5;
21     //系统关闭，系统会发送次消息
22     private const int CTRL_SHUTDOWN_EVENT = 6;
23 
24     static void Main(string[] args)
25     {
26        Program cls = new Program();
27        
28     }
29     public Program()
30     {
31       ConsoleCtrlDelegate consoleDelegete = new  ConsoleCtrlDelegate(HandlerRoutine);
32 
33       bool bRet = SetConsoleCtrlHandler(consoleDelegete, true);
34       if (bRet == false) //安装事件处理失败
35       {
36          Debug.WriteLine("error");
37       }
38       else
39       {
40          Console.WriteLine("ok");
41         Console.Read();
42       }
43     }
44 
45     private static bool HandlerRoutine(int ctrlType)
46     {
47       switch(ctrlType)
48       {
49         case CTRL_C_EVENT:// Ctrl+C 事件
50           Console.WriteLine("-- CTRL_C_EVENT --");
51         break;
52         case CTRL_BREAK_EVENT:
53           Console.WriteLine("-- CTRL_BREAK_EVENT --");
54         break;
55         case CTRL_CLOSE_EVENT://用户点 X 关闭事件
56           Console.WriteLine("-- CTRL_CLOSE_EVENT --");
57         break;
58         case CTRL_LOGOFF_EVENT:
59         break;
60         case CTRL_SHUTDOWN_EVENT://系统关闭事件
61         break;
62       }
63     //return true;//表示阻止响应系统对该程序的操作
64     return false;//忽略处理，让系统进行默认操作
65     }
66   }
67 }