Menu

Program.cs

var menu = new MenuBar(new MenuBarItem[] {
 new MenuBarItem("_File", new MenuItem[]{
  new MenuItem("_Quit", "", () => Application.RequestStop())
 }), // end of file menu
 new MenuBarItem("_Help", new MenuItem[]{
  new MenuItem("_About", "", () 
     => MessageBox.Query(10, 5, "About", "Written by Ali Bahraminezhad\nVersion: 0.0001", "Ok"))
 }) // end of the help menu
});
top.Add(menu);