分享离线下载后能够自动关机程序及程序分析

        我想大家都用迅雷下载过文件，但是要是要下载的文件太大，需要的时间就会很长，我们没那么多的时间等在电脑面前，为此迅雷弄咯个迅雷离线下载来赚钱！当然你可以花钱办理迅雷会员，就可以不用长时间开机下载咯！我写的这个小程序是针对于那些普通用户。当然迅雷现在也已经添加咯下载完成自动关机的功能，但是你毕竟只有用迅雷才能用它的功能，有一定的局限性。我也是好奇，所以试着写咯个！

      下面是程序的源代码（C#版的，用Java GUI写原理也一样）：
       
       这是程序的界面
      代码如下：
      using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace timeclose
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public System.Windows.Forms.DialogResult msg = new DialogResult();
        private void panel1_Paint(object sender, PaintEventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {          
           if (DateTime.Now.Hour == int.Parse(comboBox1.Text) && DateTime.Now.Minute == numericUpDown2.Value)
           {
               msg = MessageBox.Show("您现在就要关机吗？建议先设置具体关机时间！", "温馨提示！", MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
               if ( msg== DialogResult.Yes)
               {
                   System.Diagnostics.Process.Start("cmd.exe", "/c shutdown.exe -s -f");
                   button1.Enabled = false;
                   button2.Enabled = true;
               }
               else
                   return;
           }
            if (DateTime.Now.Hour > int.Parse(comboBox1.Text)||((DateTime.Now.Hour>=int.Parse(comboBox1.Text))&&(DateTime.Now.Minute>numericUpDown2.Value)))
           {
               System.Diagnostics.Process.Start("cmd.exe", "/c at " + comboBox1.SelectedItem.ToString() + ":" + numericUpDown2.Value.ToString() + " shutdown.exe -s -f");
                label5.Text = "系统将在次日" + comboBox1.Text + ":" + numericUpDown2.Value.ToString() + "自动关机！";
                button1.Enabled = false;
                comboBox1.Enabled = false;
                numericUpDown2.Enabled = false;
                button2.Enabled = true;
           }
           else
           {
               label5.Text = "系统将在" + comboBox1.Text + ":" + numericUpDown2.Value.ToString() + "自动关机！";
               System.Diagnostics.Process.Start("cmd.exe", "/c at " + comboBox1.SelectedItem.ToString() + ":" + numericUpDown2.Value.ToString() + " shutdown.exe -s -f");
               button1.Enabled = false;
               comboBox1.Enabled = false;
               numericUpDown2.Enabled = false;
               button2.Enabled = true;
           }

        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (msg == DialogResult.Yes)
            {
                System.Diagnostics.Process.Start("cmd.exe", "/c shutdown.exe -a");
                comboBox1.Text = DateTime.Now.Hour.ToString();
                numericUpDown2.Value = DateTime.Now.Minute;
                label5.Text = "定时关机已取消！";
                button1.Enabled = true;
                comboBox1.Enabled = true;
                numericUpDown2.Enabled = true;
                comboBox1.Focus();
                button2.Enabled = false;
            }
            else
            {
                System.Diagnostics.Process.Start("cmd.exe", "/c at " + comboBox1.SelectedItem.ToString() + ":" + numericUpDown2.Value.ToString() + " shutdown.exe -a");
                comboBox1.Text = DateTime.Now.Hour.ToString();
                numericUpDown2.Value = DateTime.Now.Minute;
                label5.Text = "定时关机已取消！";
                button1.Enabled = true;
                comboBox1.Enabled = true;
                numericUpDown2.Enabled = true;
                comboBox1.Focus();
                button2.Enabled = false;
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
          label1.Text =DateTime.Now.ToString()+" "+DateTime.Now.DayOfWeek.ToString();
          timer1.Interval = 1000; 
        }
           
      
        private void Form1_Load(object sender, EventArgs e)
        {
           
            comboBox1.Text = DateTime.Now.Hour.ToString();
            numericUpDown2.Value = DateTime.Now.Minute;          
            comboBox1.Focus();
        }
    }
}

           我写这个小程序的初衷也是方便自己定时关机，其实xp的System32文件夹下已经包含咯关机的程序shutdown.exe,要实现定时关机就要在命令行里敲命令，带上相应的参数也可以实现，但是命令不好记，敲起来不方便！把它界面化是我的最终目的。
        程序写好后，把项目编译后的.exe文件添加快捷方式到桌面就OK咯。

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