Computer

class Computer
    {
        private string name;
        private List<Component> components;
        private decimal price;

        private static decimal TotalComponentsPrice(List<Component> components)
        {
            decimal totalPrice = 0;
            foreach (var cmpt in components)
            {
                totalPrice += cmpt.Price;
            }

            return totalPrice;
        }

        public void Init(string name, List<Component> components)
        {
            this.Name = name;
            this.Price = TotalComponentsPrice(components);
            this.Components = components;
        }

        public string Name
        {
            get
            {
                return this.name;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException("Name cannot be empty");
                }
                this.name = value;
            }
        }
        public decimal Price
        {
            get
            {
                return this.price;
            }
            set
            {
                this.price = TotalComponentsPrice(components);
            }

        }
        public List<Component> Components { get; set; }
}