using System;
using System.Drawing;
using System.Windows.Forms;
 
class App{
   public static void Main(){
      Application.Run(new MenuForm());
   }
}
 
class MenuForm:Form{      
   public MenuForm(){            
      this.ContextMenu = new ContextMenu(SetupMenu());
      this.Menu = new MainMenu(SetupMenu());
   }
 
   MenuItem[] SetupMenu(){
      MenuItem file = new MenuItem("&File");
      file.MenuItems.Add("Exit", new EventHandler(OnExit));
 
      MenuItem messages = new MenuItem("&Message Boxes");
      EventHandler handler = new EventHandler(OnMessageBox);
      messages.MenuItems.Add("Message Box 1", handler);
      messages.MenuItems.Add("Message Box 2", handler);
      return new MenuItem[]{file, messages};
   }   
 
   void OnExit(Object sender, EventArgs args){
      this.Close();
   }
 
   void OnMessageBox(Object sender, EventArgs args){
      MenuItem item = sender as MenuItem;
      MessageBox.Show(this, "You selected menu item - "+item.Text);
   }
}