淺析.net簡單工廠模式

更新時間：2014年12月17日 10:04:27 投稿：hebedich

這篇文章主要介紹了淺析.net簡單工廠模式,需要的朋友可以參考下

編程時一門技術(shù)，更是一門藝術(shù)

簡單工廠模式利用面向?qū)ο蠓绞酵ㄟ^繼承、封裝、多態(tài)把程序的耦合度降低，設(shè)計(jì)模式使得程序更加靈活，容易修改，易于復(fù)用。

下面是服務(wù)器計(jì)算器代碼：

 using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Text;

 using System.Threading.Tasks;

 namespace DesignModel

 {

     /// <summary>

     /// 計(jì)算器

     /// </summary>

     public class Calculator   //創(chuàng)建一個計(jì)算器的基類可以接受兩個參數(shù)，任何算法只需重寫計(jì)算結(jié)果方法即可。

     {

         private double _numberA;

         private double _numberB;

         public double NumberA

         {

             get { return this._numberA; }

             set { this._numberA = value; }

         }

         public double NumberB

         {

             get { return this._numberB; }

             set { this._numberB = value; }

         }

         public virtual double GetResult()

         {

             double result = 0;

             return result;

         }

     }

     /// <summary>

     /// 加法

     /// </summary>

     public class Add : Calculator    //每添加一種計(jì)算方式只需添加一個計(jì)算類并重寫基類方法即可

     {

         public override double GetResult()

         {

             return  NumberA + NumberB;

         }

     }

     /// <summary>

     /// 減法

     /// </summary>

     public class Sub : Calculator

     {

         public override double GetResult()

         {

             return NumberA + NumberB;

         }

     }

     /// <summary>

     /// 計(jì)算器工廠

     /// </summary>

     public class CalculatorFactory

     {

         public static Calculator GetResult(string oper)

         {

             Calculator calcu = null;

             switch (oper)

             {

                 case "+":

                     calcu = new Add();

                     break;

                 case "-":

                     calcu = new Sub();

                     break;

             }

             return calcu;

         }

     }

 }

復(fù)制代碼代碼如下:

  static void Main(string[] args)

         {

             Console.WriteLine("請輸入數(shù)字A：");

             string numbera = Console.ReadLine();

             Console.WriteLine("請輸入運(yùn)算符：");

             string oper = Console.ReadLine();

             Console.WriteLine("請輸入數(shù)字B：");

             string numberb = Console.ReadLine();

             Calculator c = CalculatorFactory.GetResult(oper);

             c.NumberA = Convert.ToDouble(numbera);

             c.NumberB = Convert.ToDouble(numberb);

             Console.WriteLine(string.Format("{0}{1}{2}={3}", numbera, oper, numberb, c.GetResult()));

             Console.ReadLine();

         }

基本驗(yàn)證沒加，學(xué)習(xí)練習(xí)的同學(xué)可以自己加上

28種設(shè)計(jì)模式后續(xù)更新

復(fù)制代碼代碼如下:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace DesignModel

{

    /// <summary>

    /// 計(jì)算器

    /// </summary>

    public class Calculator   //創(chuàng)建一個計(jì)算器的基類可以接受兩個參數(shù)，任何算法只需重寫計(jì)算結(jié)果方法即可。

    {

        private double _numberA;

        private double _numberB;

        public double NumberA

        {

            get { return this._numberA; }

            set { this._numberA = value; }

        }

        public double NumberB

        {

            get { return this._numberB; }

            set { this._numberB = value; }

        }

        public virtual double GetResult()

        {

            double result = 0;

            return result;

        }

    }

    /// <summary>

    /// 加法

    /// </summary>

    public class Add : Calculator    //每添加一種計(jì)算方式只需添加一個計(jì)算類并重寫基類方法即可

    {

        public override double GetResult()

        {

            return  NumberA + NumberB;

        }

    }

    /// <summary>

    /// 減法

    /// </summary>

    public class Sub : Calculator

    {

        public override double GetResult()

        {

            return NumberA + NumberB;

        }

    }

    /// <summary>

    /// 計(jì)算器工廠

    /// </summary>

    public class CalculatorFactory

    {

        public static Calculator GetResult(string oper)

        {

            Calculator calcu = null;

            switch (oper)

            {

                case "+":

                    calcu = new Add();

                    break;

                case "-":

                    calcu = new Sub();

                    break;

            }

            return calcu;

        }

    }

}