public partial class Form1 : Form

    {

        #region

        //创建NotifyIcon对象

        NotifyIcon notifyicon = new NotifyIcon();

        //创建托盘图标对象

        Icon ico = new Icon("u9.ico");

        //创建托盘菜单对象

        ContextMenu notifyContextMenu = new ContextMenu();

        #endregion

        public Form1()

        {

            InitializeComponent();

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            //设置鼠标放在托盘图标上面的文字

            this.notifyIcon1.Text = "码农网测试";

        }

        /// <summary>

        /// 最小化到托盘

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void Form1_SizeChanged(object sender, EventArgs e)

        {

            //判断是否选择的是最小化按钮

            if (WindowState == FormWindowState.Minimized)

            {

                //托盘显示图标等于托盘图标对象

                //注意notifyIcon1是控件的名字而不是对象的名字

                notifyIcon1.Icon = ico;

                //隐藏任务栏区图标

                this.ShowInTaskbar = false;

                //图标显示在托盘区

                notifyicon.Visible = true;

            }

        }

        /// <summary>

        /// 托盘单击事件

        /// </summary>

        /// <param name="sender"></param>

        /// <param name="e"></param>

        private void notifyIcon1_MouseClick(object sender, MouseEventArgs e)

        {

            switch (e.Button)

            {

                case System.Windows.Forms.MouseButtons.Left:    //左击

                    //判断是否已经最小化于托盘

                    if (WindowState == FormWindowState.Minimized)

                    {

                        //还原窗体显示

                        WindowState = FormWindowState.Normal;

                        //激活窗体并给予它焦点

                        this.Activate();

                        //任务栏区显示图标

                        this.ShowInTaskbar = true;

                        //托盘区图标隐藏

                        notifyicon.Visible = false;

                    }

                    break;

                case System.Windows.Forms.MouseButtons.Right:

                    //MessageBox.Show("右键");

                    break;

            }

        }

    }