72장 Class 관련 복습

Program.cs

using System;
using Hyundai;

public class MyClass
{
    public static void Main(string[] args)
    {
        Car car = new Car("현대");

        car.Length = 2;

        car[0] = "에쿠스";
        car[1] = "제네시스";

        car.Show();

        Carhandler ch = new Carhandler(car.Show);
        ch();

        car.Go += car.Show;
        car.Go += car.Show;
        car.onGo();
    }
}

Car.cs

using System;

namespace Hyundai
{
    public class Car
    {
        // field
        private string name;

        // 생성자
        // 인스턴스 생성 ctor + Tab + Tab
        public Car()                                   // 매개 변수가 없는
        {
            // Empty
        }
        public Car(string name)                  // 매개변수가 있는
        {
            this.name = name;                     // 자기자신
        }

        // Property
        // .속성 prop + Teb + Teb
        private int _Length;
        public int Length
        {
            get { return _Length; }
            set { _Length = value; names = new string[value]; }
        }

        // indexer 사용시
        private string[] names;
        public string this[int index]
        {
            get { return names[index]; }
            set { names[index] = value; }
        }

        // Method
        public void Show()
        {
            Console.WriteLine("{0}\n", name);
            foreach (string s in names)
            {
                Console.WriteLine("{0}", s);
            }
        }

        ~Car()
        {
            names = null;
        }

        // event
        public event Carhandler Go;
        // event handler
        public void onGo()
        {
            if (Go != null)
            {
                Go();
            }
        }
    }

    public delegate void Carhandler();
}