捕獲控制臺出口C＃我有一個包含很多線程的控制臺應(yīng)用程序。有些線程可以監(jiān)視某些條件，如果它們是真的則終止程序。這種終止可以隨時發(fā)生。我需要一個可以在程序關(guān)閉時觸發(fā)的事件，以便我可以清理所有其他線程并正確關(guān)閉所有文件句柄和連接。我不確定.NET框架中是否已經(jīng)內(nèi)置了一個，所以我在編寫自己的框架之前就已經(jīng)問過了。我想知道是否有一個事件：MyConsoleProgram.OnExit += CleanupBeforeExit;
3 回答
慕妹3242003
TA貢獻(xiàn)1824條經(jīng)驗 獲得超6個贊
完整的工作示例，使用ctrl-c，用X關(guān)閉窗口并殺死：
using System;using System.Collections.Generic;using System.Linq;using System.Runtime.InteropServices;using System.Text;using System.Threading;namespace TestTrapCtrlC {
public class Program {
static bool exitSystem = false;
#region Trap application termination
[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) {
Console.WriteLine("Exiting system due to external CTRL-C, or process kill, or shutdown");
//do your cleanup here
Thread.Sleep(5000); //simulate some cleanup delay
Console.WriteLine("Cleanup complete");
//allow main to run off
exitSystem = true;
//shutdown right away so there are no lingering threads
Environment.Exit(-1);
return true;
}
#endregion
static void Main(string[] args) {
// Some boilerplate to react to close window event, CTRL-C, kill, etc
_handler += new EventHandler(Handler);
SetConsoleCtrlHandler(_handler, true);
//start your multi threaded program here
Program p = new Program();
p.Start();
//hold the console so it doesn’t run off the end
while (!exitSystem) {
Thread.Sleep(500);
}
}
public void Start() {
// start a thread and start doing some processing
Console.WriteLine("Thread started, processing..");
}
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