windows系统定时自动关机

 public partial class Form1 : Form
    {
        int 年;
        int 月;
        int 日;
        int 时 = 18;
        int 分 = 0;
        int 秒 = 0;
        public Form1()
        {
            InitializeComponent();
            this.comboBox1.Items.Add("今天");
            this.comboBox1.Items.Add("明天");
            DateTime now = DateTime.Now;
            this.年 = now.Year;
            this.月 = now.Month;
            this.日 = now.Day;

            this.notifyIcon1.Icon = this.Icon;
            //小图标文本提示
            this.notifyIcon1.BalloonTipText = "自动关机";
            MenuItem[] menuItems = new MenuItem[3];
            menuItems[0] = new MenuItem("显示");
            menuItems[0].Click = menuItem1_Click;
            menuItems[1] = new MenuItem("隐藏");
            menuItems[1].Click = menuItem2_Click;
            menuItems[2] = new MenuItem("退出");
            menuItems[2].Click = ExitToolStripMenuItem_Click_1;
            ContextMenu contextMenu = new ContextMenu(menuItems);

            this.notifyIcon1.ContextMenu = contextMenu;
        }

        private void menuItem2_Click(object sender, EventArgs e)
        {
            this.Hide();
        }

        private void menuItem1_Click(object sender, EventArgs e)
        {
            this.Show();
            this.WindowState = FormWindowState.Normal;
            this.Activate();
            确定 = false;
        }

        private void ExitToolStripMenuItem_Click_1(object sender, EventArgs e)
        {
            throw new NotImplementedException();
        }
        bool 确定 = false;
        string path = "shutdown.exe";
        private void 关机()
        {
            确定 = false;
            按键精灵.EXE.OpenFileName(path, "-s -t 1");
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            if(确定)
            {
                DateTime now = DateTime.Now;
                if(this.年 > now.Year)
                {                   
                    return;
                }
                else
                {
                    if (this.年 < now.Year)
                    {
                        关机();
                        return;
                    }
                }
                if (this.月 > now.Month)
                {
                    return;
                }
                else
                {
                    if (this.月 < now.Month)
                    {
                        关机();
                        return;
                    }
                }
                if (this.日 > now.Day)
                {
                    return;
                }
                else
                {
                    if (this.日 < now.Day)
                    {
                        关机();
                        return;
                    }
                }
                if (时 > now.Hour)
                {
                    return;
                }
                else
                {
                    if (时 < now.Hour)
                    {
                        关机();
                        return;
                    }
                }
                if (分 > now.Minute)
                {
                    return;
                }
                else
                {
                    if (分 < now.Minute)
                    {
                        关机();
                        return;
                    }
                }
                if (秒 > now.Second)
                {
                    return;
                }
                else
                {
                    if (秒 < now.Second)
                    {
                        关机();
                        return;
                    }
                }
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                int 时2 = Convert.ToInt32(this.textBox1.Text);
                int 分2 = Convert.ToInt32(this.textBox2.Text);
                int 秒2 = Convert.ToInt32(this.textBox2.Text);
                if(时2>=0 && 时2<24)
                {
                    时 = 时2;
                }
                if (分2 >= 0 && 分2 < 60)
                {
                    分 = 分2;
                }
                if (秒2 >= 0 && 秒2 < 60)
                {
                    秒 = 秒2;
                }
                确定 = true;
            }
            catch
            {

            }
        }

        private void notifyIcon1_MouseDown(object sender, MouseEventArgs e)
        {
            //判断鼠标右键点击
            if (e.Button == System.Windows.Forms.MouseButtons.Right)
            {
                //控件弹出菜单来自于NotifyIconMenu

            }
            else
            {
                this.Show();
                this.WindowState = FormWindowState.Normal;
                this.Activate();
            }
        }

        private void Form2_FormClosing(object sender, FormClosingEventArgs e)
        {
            e.Cancel = true;
            this.Hide();
        }
    }