C# 简单的定时关机

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 AutoCloseComputer
{
    public partial class Form1 : Form
    {
        public Form1()
        { 

            InitializeComponent();
            
            //设置默认时间为当前时间
            nud_hour.Value = Convert.ToDecimal(DateTime.Now.Hour);
            nud_min.Value = Convert.ToDecimal(DateTime.Now.Minute);

            txt_sencods.Text = "600";  //设置默认时间为10*60秒
            
        }

        /// <summary>
        /// 启动定时关机程序
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnCloseComputer_Click(object sender, EventArgs e)
        {
            lab_result.Text = "";

            string str = txt_sencods.Text.Trim();
            if (string.IsNullOrEmpty(str))
            {
                lab_result.Text = "时间不能为空";
                return;
            }

            int seconds = 0;
            if (int.TryParse(str, out seconds))
            { 
                OperateComputer("shutdown -s -t " + seconds); 
            }
            else
            {
                lab_result.Text = "时间格式只能输入数字";
            }
        }

        /// <summary>
        /// 取消关机命令
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnCancelClose_Click(object sender, EventArgs e)
        {
            OperateComputer("shutdown -a"); 
        }


        /// <summary>
        /// 操作电脑命令
        /// </summary>
        /// <param name="command"></param>
        private void OperateComputer(string command)
        {
            var startInfo = new System.Diagnostics.ProcessStartInfo("cmd.exe");
            startInfo.UseShellExecute = false;
            startInfo.RedirectStandardInput = true;
            startInfo.RedirectStandardOutput = true;
            startInfo.RedirectStandardError = true;
            startInfo.CreateNoWindow = true;
            var myProcess = new System.Diagnostics.Process();
            myProcess.StartInfo = startInfo;
            myProcess.Start();
            myProcess.StandardInput.WriteLine(command);
        }


        /// <summary>
        /// 指定时间关机
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnTimeClose_Click(object sender, EventArgs e)
        {
            int hour = Convert.ToInt32(nud_hour.Value);
            int min = Convert.ToInt32(nud_min.Value);

            DateTime closedt = DateTime.Now;

            //当时间小于当前时认为是第二天的时间
            if(hour<DateTime.Now.Hour)
            {
                string strdt = DateTime.Now.AddDays(1D).ToString("yyyy-MM-dd") + " " + hour.ToString().PadLeft(2,'0') + ":" + min.ToString().PadLeft(2,'0');
                closedt = Convert.ToDateTime(strdt);

            }else
            {
                string strdt = DateTime.Now.ToString("yyyy-MM-dd") + " " + hour.ToString().PadLeft(2, '0') + ":" + min.ToString().PadLeft(2, '0');
                closedt = Convert.ToDateTime(strdt);
            }
            //计算出时间差
            int total = Convert.ToInt32((closedt - DateTime.Now).TotalSeconds);
            OperateComputer("shutdown -s -t " + total);

            //一下命令没有效果
            //string command = "at " + hour + ":" + min + " shutdown -s";
            //OperateComputer(command); 

        }
         
    }
}

此程序是VS2013编写的。

提供程序的下载链接：https://pan.baidu.com/s/1slpGGsl