Decorator

using System;

namespace Decorator
{
    class Program
    {
        static void Main(string[] args)
        {
            IItem newItem = new Sword();
            Console.WriteLine(newItem.GetName() + " Value: " + newItem.GetValue().ToString());

            newItem = new Magic(newItem);
            Console.WriteLine(newItem.GetName() + " Value: " + newItem.GetValue().ToString());

            Console.ReadLine();
        }
    }

    public interface IItem
    {
       string GetName();
       int GetValue();
    }
    class Sword : IItem
    {
        public string GetName()
        {
            return "Iron Sword";
        }

        public int GetValue()
        {
            return 20;
        }
    }

   class Armor : IItem
    {
        public string GetName()
        {
            return "Iron Armor";
        }

        public int GetValue()
        {
            return 50;
        }
    }

    abstract class Enchantment : IItem
    {
        IItem _item = null;

        protected int _Value = 0;

        protected Enchantment(IItem baseItem)
        {
            _item = baseItem;
        }

        public string GetName()
        {
            return (_item.GetName() +" +1 ");
        }

       public int GetValue()
        {
            return (_item.GetValue() + _Value);
        }
    }
     class Magic : Enchantment
    {
        public Magic(IItem baseComponent): base(baseComponent)
        {
            this._Value = 30;
        }
    }
}