第七章-深入理解类-索引器实例

1.介绍 2.代码

{
    internal class Program
    {
        public string FirstName;
        public string LastName;
        public string CityOfBirth;
        public string this[int index]
        {
            set
            {
                switch (index)
                {
                    case 0:
                        FirstName = value;
                        break;
                    case 1:
                        LastName = value;
                        break;
                    case 2:
                        CityOfBirth = value;
                        break;
                }
            }
            get
            {
                switch (index)
                {
                    case 0:
                        return FirstName;
                    case 1: 
                        return LastName;
                    case 2: 
                        return CityOfBirth;
                    default:
                        throw new ArgumentOutOfRangeException("index");                }
            }
        }
        static void Main(string[] args)
        {
            Program program = new Program();
            program[0] = "Park";
            program[1] = "Jim";
            Console.WriteLine(program[1] + " "+program[0]);
            Console.ReadLine();
        }
    }
}