C#索引器

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Runtime.InteropServices;
  5 using System.Text;
  6 
  7 namespace ClassTrining
  8 {
  9     class Demo
 10     {
 11         //===============属性=============================================
 12         //声明私有字段
 13         private string _name = "Mike";
 14         /// <summary>
 15         /// 声明属性
 16         /// </summary>
 17         public string Name
 18         {
 19             get
 20             {
 21                 //返回声明的私有字段值
 22                 return _name;
 23             }
 24             set
 25             {
 26                 //用字段来保存用户设置的值
 27                 _name = value;
 28             }
 29         }
 30         //===============属性=============================================
 31 
 32 
 33         //===============索引器=============================================
 34         //声明字符串数组
 35         string[] strArray = new string[100];
 36         /// <summary>
 37         /// 声明字符串类型 索引器 this 用于操作字符串数组，通过索引来找值
 38         /// </summary>
 39         /// <param name="i"></param>
 40         /// <returns></returns>
 41         public string this[int i]
 42         {
 43             get
 44             {
 45                 //返回数组的指定索引值
 46                 return strArray[i];
 47             }
 48             set
 49             {
 50                 //用数组指定索引位置改变值与保存用户设置值
 51                 strArray[i] = value;
 52             }
 53         }
 54         //===============索引器=============================================
 55 
 56     }
 57 
 58 
 59     class Mijk
 60     {
 61         private string name = "LiHong";
 62 
 63 
 64         public string Name
 65         {
 66             get
 67             {
 68                 return name;
 69             }
 70             set
 71             {
 72                 name = value;
 73             }
 74         }
 75 
 76         private string[] meli = new string[100];
 77         
 78 
 79         public string this[int i]
 80         {
 81             get
 82             {
 83                 return meli[i];
 84             }
 85             set
 86             {
 87                 meli[i] = value;
 88             }
 89         }
 90 
 91         public void Test()
 92         {
 93             meli[0] = "Hello";
 94             meli[1] = "Kity";
 95             meli[2] = "csharp";
 96             meli[12] = "studio";
 97 
 98             string str = meli[2];
 99 
100 
101             meli[99] = "NOKIA";
102 
103             string nokia = meli[99];
104         }
105 
106 
107 
108 
109 
110     }
111     
112     
113     
114 }