DinnerMenu.cs

using System;
using System.Collections;

namespace IteratorPattern
{
    public class DinnerMenu
    {
        private const int Max = 1;

        private int _count;
        private Menu[] _items;

        public IEnumerable Items
        {
            get
            {
                return new DinnerMenuIterator(_items);
            }
        }

        public DinnerMenu()
        {
            _items = new Menu[Max];

            AddItems("Hamburger", "Hamburger with cheese and onions", 160, false);

        }

        private void AddItems(string name, string description, int price, bool veg)
        {
            var item = new Menu(name, description, price, veg);

            if (_count <= Max)
            {
                _items[_count] = item;
                _count++;
            }
            else
            {
                throw new IndexOutOfRangeException();
            }
        }
    }
}