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 = "";  //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 = ;

             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(,'') + ":" + min.ToString().PadLeft(,'');

                 closedt = Convert.ToDateTime(strdt);

             }else

             {

                 string strdt = DateTime.Now.ToString("yyyy-MM-dd") + " " + hour.ToString().PadLeft(, '') + ":" + min.ToString().PadLeft(, '');

                 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); 

         }

     }

 }