设计模式系列之-简单工厂

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using DPC.Domain;



namespace DPC.CreateModel.SimpleFactory

{

    class Program

    {

        static void Main(string[] args)

        {

            MobilePhone phone = MobilePhoneFactory.GetMobilePhone("苹果");

            phone.Show();

            Console.WriteLine();



            MobilePhone xiaomo = MobilePhoneFactory.GetMobilePhone("小米");

            xiaomo.Show();

            Console.ReadKey();

        }

    }





    //简单工厂（又名静态工厂）

    //优点：该模式代码简单易于理解，学习成本较小。

    //缺点：业务变动时需要修改工厂中的已有代码，违背了对修改关闭、对扩展开放的设计原则，不利于程序的扩展和维护。

    public class MobilePhoneFactory

    {

        public static MobilePhone GetMobilePhone(string name)

        { 

            switch(name)

            {

                case "苹果":

                    return new IPhone("iphone6", 5000);

                case "小米":

                    return new XiaoMi("小米青春版", 2000);

                default:

                    throw new NotImplementedException("不存在的品牌");

            }

        }

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace DPC.Domain

{

    public abstract class MobilePhone

    {

        public MobilePhone(string model,decimal price)

        {

            this.Model = model;

            this.Price = price;

        }



        /// <summary>

        /// 名字

        /// </summary>

        public abstract string Name { get; }



        /// <summary>

        /// 型号

        /// </summary>

        public string Model { get; private set; }



        /// <summary>

        /// 价格

        /// </summary>

        public decimal Price { get; private set; }



        /// <summary>

        /// 综合情况展示

        /// </summary>

        public virtual void Show()

        {

            Console.WriteLine("品牌：{0}，型号：{1}，价格：{2}", this.Name, this.Model, this.Price);

        }

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace DPC.Domain

{

    public class IPhone : MobilePhone

    {

        private static readonly string name = "苹果";



        public IPhone(string model, decimal price)

            : base(model, price) 

        { }



        public override string Name

        {

            get { return name; }

        }



        public override void Show()

        {

            Console.WriteLine("土豪手机闪亮登场......");

            Console.WriteLine("品牌：{0}，型号：{1}，价格：{2}",this.Name,this.Model,this.Price);

        }

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;



namespace DPC.Domain

{

    public class XiaoMi : MobilePhone

    {

        public XiaoMi(string model, decimal price)

            : base(model, price)

        { }



        public override string Name

        {

            get { return "小米"; }

        }



        public override void Show()

        {

            Console.WriteLine("made in china手机闪亮登场......");

            Console.WriteLine("品牌：{0}，型号：{1}，价格：{2}", this.Name, this.Model, this.Price);

        }

    }

}