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    1. using System;
    3. namespace _086_简单工厂设计模式
    4. {
    5.     class Program
    6.     {
    7.         static void Main(string[] args)
    8.         {
    9.             Console.WriteLine("请输入你想要的笔记本");
    10.             string brand = Console.ReadLine();
    11.             NoteBook nb = GetNoteBook(brand);
    12.             nb.SayHello();
    14.             Console.ReadKey();
    15.         }
    17.         /// <summary>
    18.         /// 简单工厂的核心，根据用户的输入创建对象赋值给父类
    19.         /// </summary>
    20.         /// <param name="brand">用户的输入</param>
    21.         /// <returns>父类</returns>
    22.         public static NoteBook GetNoteBook(string brand)
    23.         {
    24.             NoteBook nb = null;
    25.             switch (brand)
    26.             {
    27.                 case "Lenovo":
    28.                     nb = new Lenovo();
    29.                     break;
    30.                 case "Acer":
    31.                     nb = new Acer();
    32.                     break;
    33.                 case "Dell":
    34.                     nb = new Dell();
    35.                     break;
    36.                 case "IBM":
    37.                     nb = new IBM();
    38.                     break;
    39.                 default:
    40.                     break;
    41.             }
    43.             return nb;
    44.         }
    45.     }
    46. }
    47. using System;
    48. using System.Collections.Generic;
    49. using System.Text;
    51. namespace _086_简单工厂设计模式
    52. {
    53.     abstract class NoteBook
    54.     {
    55.        public abstract void SayHello();
    56.     }
    57. }
    58. using System;
    59. using System.Collections.Generic;
    60. using System.Text;
    62. namespace _086_简单工厂设计模式
    63. {
    64.     class Lenovo : NoteBook
    65.     {
    66.         public override void SayHello()
    67.         {
    68.             Console.WriteLine("我是联想笔记本");
    69.         }
    70.     }
    71. }
    72. using System;
    73. using System.Collections.Generic;
    74. using System.Text;
    76. namespace _086_简单工厂设计模式
    77. {
    78.     class Acer : NoteBook
    79.     {
    80.         public override void SayHello()
    81.         {
    82.             Console.WriteLine("我是鸿基笔记本");
    83.         }
    84.     }
    85. }
    86. using System;
    87. using System.Collections.Generic;
    88. using System.Text;
    90. namespace _086_简单工厂设计模式
    91. {
    92.     class Dell : NoteBook
    93.     {
    94.         public override void SayHello()
    95.         {
    96.             Console.WriteLine("我是戴尔笔记本");
    97.         }
    98.     }
    99. }
    100. using System;
    101. using System.Collections.Generic;
    102. using System.Text;
    104. namespace _086_简单工厂设计模式
    105. {
    106.     class IBM : NoteBook
    107.     {
    108.         public override void SayHello()
    109.         {
    110.             Console.WriteLine("我是IBM笔记本");
    111.         }
    112.     }
    113. }