Creating a system tray app with menu and Sub Menu

public ContextMenu traymenu;

public Form()
       {
           trayMenu = new ContextMenu();
           trayMenu.MenuItems.Add("Logout", OnExit);

           trayIcon = new NotifyIcon();
           trayIcon.Text = "KHorizon Chat";
           trayIcon.Icon = new System.Drawing.Icon(KHorizon_Chat.Properties.Resources.chat, 40, 40);

           trayIcon.ContextMenu = trayMenu;
           trayIcon.Visible = true;
           InitializeComponent();
       }
private void Form_Load(object sender, EventArgs e)
       {
           this.WindowState = FormWindowState.Minimized;
           this.Visible = false;
       }
private void OnExit(object sender, EventArgs e)
       {
           System.Environment.Exit(0);
       }