015-時間到提醒該關機休息

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        DateTime startTime, endTime;

        private void timer1_Tick_1(object sender, EventArgs e)
        {
            if (DateTime.Now.ToString() == endTime.ToString())
            {
                timer1.Stop();
                MessageBox.Show("開始時間：" + startTime + "\n現在時間：" + endTime.ToString() + "\n該關機了");
            }           
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            startTime = DateTime.Now;
            endTime = startTime.AddMinutes(55);//電腦打算用多久，請以分鐘為單位(預設55分鐘)
        }
    }
}

ps.需配合windows的自動排程在一開機的時候啟用，未來打算改成在背景執行作業