Minimizing to System Tray with .NET/C#

A basic example (standard VB2010 using directives). TIP: System.Windows.Forms.MenuItem can have submenus by overloading.

C# Code (notifyIcon1 is already added from Toolbox):

public partial class MainForm : Form
{
	private MenuItem[] IcoMenuItems;
	private ContextMenu IcoContextMenu;

	public MainForm()
	{
		InitializeComponent();
		CreateTasktrayIcon();
	}

	private void CreateTasktrayIcon()
	{
		IcoContextMenu = new ContextMenu();
		IcoMenuItems = new MenuItem[1];

		// Initialize the menu item(s).
		IcoMenuItems[0] = new MenuItem();
		IcoMenuItems[0].Index = 0;
		IcoMenuItems[0].Text = "Exit";
		IcoMenuItems[0].Click += new EventHandler(IcoMenuItem_ExitClick);

		// Add menu items to a context menu.
		IcoContextMenu.MenuItems.AddRange(IcoMenuItems);

		// Add the menu item(s) to the NotifyIcon object.
		notifyIcon1.ContextMenu = IcoContextMenu;

		// Add a double-click handler to maximize program.
		notifyIcon1.DoubleClick += new EventHandler(IcoMenuItem_DoubleClick);

		// Hide by default.
		notifyIcon1.Visible = false;
	}

	private void IcoMenuItem_ExitClick(object Sender, EventArgs e)
	{
		// Close MainForm, which closes the application.
		this.Close();
	}

	private void IcoMenuItem_DoubleClick(object Sender, EventArgs e)
	{
		if (this.WindowState == FormWindowState.Minimized) {
			this.Show();
			this.WindowState = FormWindowState.Normal;
			notifyIcon1.Visible = false;
		}
	}

	private void MainForm_Resize(object sender, EventArgs e)
	{
		if (this.WindowState == FormWindowState.Minimized) {
			this.Hide();
			notifyIcon1.Visible = true;
			notifyIcon1.ShowBalloonTip(500);
		}
	}	
}