03.ComputerCatalog

Component.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _03.ComputerCatalog
{
    class Component
    {
        private string name;
        private decimal price;

        public string Name
        {
            get
            {
                return this.name;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException("Name canot be empty.");
                }
                else
                {
                    this.name = value;
                }
            }
        }
        public decimal Price
        {
            get
            {
                return this.price;
            }
            set
            {
                if (value<0)
                {
                    throw new ArgumentException("Price canot be negative.");
                }
                else
                {
                    this.price = value;
                }
            }
        }
        public string Details { get; set; }

        public Component(string name,string details,decimal price)
        {
            this.Name = name;
            this.Details = details;
            this.Price = price;
        }
        public Component(string name,decimal price):this(name,"",price)
        {

        }
        public Component(Component c):this(c.Name,c.Details,c.Price)
        {

        }
        public Component():this("","",0)
        {

        }
        public override string ToString()
        {
            return string.Format("Component Name:{0}.\nComponent Price:{1}lv.\nComponent Details:{2}.", this.Name, this.Price, this.Details);
        }
    }
}

Computer.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _03.ComputerCatalog
{
    class Computer
    {
        private string name;
        private List<Component> component;

        public string Name
        {
            get
            {
                return this.name;
            }
            set
            {
                if (string.IsNullOrEmpty(value))
                {
                    throw new ArgumentNullException();
                }
                else
                {
                    this.name = value;
                }
            }
        }
        public List<Component> Component
        {
            get
            {
                return this.component;
            }
            set
            {
                this.component = new List<Component>(value);
            }
        }

        public Computer(string name,List<Component> components)
        {
            this.Name = name;
            this.Component = new List<Component>(components);
        }
        public Computer(string name):this(name,new List<Component>())
        {

        }

        public void AddComponent(Component c)
        {
            this.Component.Add(c);
        }

        public  void DisplayComputer()
        {
            decimal totalPrice = 0;
            Console.WriteLine("Name of the Computer: {0}",this.Name);
            for (int i = 0; i < this.Component.Count; i++)
            {
                Console.WriteLine(Component[i]);
                totalPrice += Component[i].Price;
                Console.WriteLine();
            }
            Console.WriteLine("Total price of the computer is: {0}lv.",totalPrice);
        }
    }
}