controlapp/ControlApp/MyCustomApplicationContext.cs

using System;
using System.Drawing;
using System.Windows.Forms;

namespace ControlApp;

public class MyCustomApplicationContext : ApplicationContext
{
	private NotifyIcon trayIcon;

	public MyCustomApplicationContext()
	{
		trayIcon = new NotifyIcon();
		trayIcon.Icon = new Icon("App.ico");
		trayIcon.ContextMenuStrip = new ContextMenuStrip();
		trayIcon.ContextMenuStrip.Items.Add("Exit", null, Exit);
		trayIcon.ContextMenuStrip.Items.Add("Open", null, Open);
		trayIcon.ContextMenuStrip.Items.Add("Panic", null, Panic);
		trayIcon.Visible = true;
	}

	private void Exit(object sender, EventArgs e)
	{
		trayIcon.Visible = false;
		Application.Exit();
	}

	private void Open(object sender, EventArgs e)
	{
		using ControlApp myform = new ControlApp();
		myform.ShowDialog();
	}

	private void Panic(object sender, EventArgs e)
	{
		foreach (Form openForm in Application.OpenForms)
		{
			openForm.Close();
		}
	}
}