析构函数调用时间

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简介明了，上实验代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

/********************************************************************
	created:	2018/10/16
	created:	16:10:2018   10:00
	filename: 	c:\users\bayin\documents\visual studio 2012\Projects\experiment\experiment\Program.cs
	file path:	c:\users\bayin\documents\visual studio 2012\Projects\experiment\experiment
	file base:	Program
	file ext:	cs
	author:		Bill
	
	purpose:	实验析构函数调用时间，调用在所有资源释放之前；
*********************************************************************/
namespace experiment
{
    class Program
    {
        static void Main(string[] args)
        {
            testExit testExit = new testExit();
            GC.Collect();
            //while (true)
            //{

            //}
            Console.ReadKey();
            testExit = null;
            System.Environment.Exit(0);
        }
    }

    public class testExit 
   {
        Thread print = null;
        int i = 1;
        private CancellationTokenSource cancelSource = new CancellationTokenSource();

        public testExit()
        {
            print = new Thread(ThreadPrint);
            print.IsBackground = false;
            print.Start();
        }

        private void ThreadPrint(object obj)
        {
            while (!cancelSource.IsCancellationRequested)
            {
                Console.WriteLine("当前执行到" + i++.ToString());
                Thread.Sleep(10);
            }
        }

        ~testExit()
        {
            cancelSource.Cancel();
        }
    }

}

总结：在一些程序一开始就自动运行的辅助类，可使用析构函数释放类资源，避免了臃肿的Exit()函数的调用。程序设计应随机应变，灵活机动。