C#实现右下角图标(系统托盘)功能

窗体中拖入　notifyIcon 组件

notifyIcon 中的 ICON 属性 显示的图标

下面是系统托盘的基本功能代码（单击最小化窗体隐藏,双击图标显示）及窗体关闭时退出确认代码。

　   //单击最小化窗体隐藏

　　private void frmMain_SizeChanged(object sender, EventArgs e)
        {
            if (this.WindowState == FormWindowState.Normal)
            {
                notifyIcon1.Visible = true; //托盘图标隐藏
            }
            if (this.WindowState == FormWindowState.Minimized)//最小化事件
            {
                this.Hide();//最小化时窗体隐藏
            }
        }

       //双击系统托盘的小图标事件

        private void notifyIcon1_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            if (this.WindowState == FormWindowState.Minimized)
            {
                this.Show();
                this.WindowState = FormWindowState.Normal; //还原窗体
            }
        }

        private void frmMain_FormClosing(object sender, FormClosingEventArgs e) //关闭事件
        {
            DialogResult result;
            result = MessageBox.Show("确定退出吗？", "退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
            if (result == DialogResult.OK)
            {

                Application.ExitThread();
            }
            else
            {
                e.Cancel = true;
            }
        }