Class Keyboard

using System;

namespace class1
{

    public class Keyboard
    {
        public string Brand { get; set; }

        private int keyCount;
        public int KeyCount
        {
            get
            {
                return keyCount;
            }
            set
            {
                if (value < 80 || value > 130)
                {
                    throw new ArgumentException("Invalid keys number");
                }

                keyCount = value;
            }
        }

        public string KbdType { get; set; }

        public double Price { get; set; }


        public Keyboard(string brand, string kbdType, int keyCount, double price)
        {
            this.Brand = brand;
            this.KbdType = kbdType;
            this.KeyCount = keyCount;
            this.Price = price;

        }

        public override string ToString()
        {
            return string.Format("KBD {0}, {1}, {2} keys, Price: {3:f2}]",
                                 Brand, KbdType, KeyCount, Price);
        }


    }
}