工厂模式

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

namespace 工厂模式
{
    class Program
    {
        public interface IFruit
        {
        }
        public class Orange : IFruit
        {
            public Orange()
            {
                Console.WriteLine("An orange is got!");
            }
        }
        public class Apple : IFruit
        {
            public Apple()
            {
                Console.WriteLine("An apple is got!");
            }
        }

        public class FruitFactory
        {
            public Orange MakeOrange()
            {
                return new Orange();
            }
            public Apple MakeApple()
            {
                return new Apple();
            }
        }

        static void Main(string[] args)
        {
            string FruitName = Console.ReadLine();
            IFruit MyFruit = null;
            FruitFactory MyFruitFactory = new FruitFactory();
            switch (FruitName)
            {
                case "Orange":
                    MyFruit = MyFruitFactory.MakeOrange();
                    break;
                case "Apple":
                    MyFruit = MyFruitFactory.MakeApple();
                    break;
                default:
                    break;
            }
            Console.ReadLine();
        }
    }
}