面向对象-封装

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5
  6 namespace 封装
  7 {     在其他类里引用
  8     class Student
  9     {
 10         //成员方法
 11         public void Write()
 12         {
 13             Console.WriteLine("我是Stu的Write方法！");
 14         }
 15
 16         /// <summary>
 17         /// 求和方法
 18         /// </summary>
 19         /// <param name="a">第一个数</param>
 20         /// <param name="b">第二个数</param>
 21         /// <returns></returns>
 22         public int Sum(int a,int b)
 23         {
 24             return a + b;
 25         }
 26
 27
 28
 29
 30
 31
 32         private string _Code;
 33
 34         public string Code
 35         {
 36             get
 37             {
 38                 return _Code;
 39             }
 40
 41             set
 42             {
 43                 _Code = value;
 44             }
 45         }
 46
 47         private string _Name;
 48
 49         /// <summary>
 50         /// 学生姓名
 51         /// </summary>
 52         public string Name
 53         {
 54             get { return _Name; }
 55             set { _Name = value; }
 56         }
 57
 58
 59
 60
 61
 62         private decimal _Score;
 63
 64         public decimal Score
 65         {
 66             get
 67             {
 68                 return _Score;
 69             }
 70             set
 71             {
 72                 if (value < 0 || value > 100)
 73                 {
 74                     _Score = 0;
 75                 }
 76                 else
 77                 {
 78                     _Score = value;
 79                 }
 80             }
 81         }
 82
 83
 84         private DateTime _Birthday;
 85
 86         public DateTime Birthday
 87         {
 88             get
 89             {
 90                 return _Birthday;
 91             }
 92             set
 93             {
 94                 _Birthday = value;
 95             }
 96         }
 97
 98         public string BirthdayStr
 99         {
100             get
101             {
102                 return _Birthday.ToString("yyyy年MM月dd日");
103             }
104         }
105
106         public string CodeAndScoreSum
107         {
108             get
109             {
110                 return _Code + _Score;
111             }
112         }
113
114
115     }
116 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5
 6 namespace 封装
 7 {
 8     class Teacher
 9     {第二个类
10         //构造函数
11         public Teacher()
12         {
13             _Name = "切西瓜";
14         }
15
16         private string _Name;
17
18         public string Name
19         {
20             get { return _Name; }
21             set { _Name = value; }
22         }
23
24
25     }
26 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5
 6 namespace 封装
 7 {
 8     class Program
 9     {
10         static void Main(string[] args)
11         {
12             Student s = new Student(); //实例化
13
14             s.Write();
15             int i = s.Sum(5, 5);
16
17             Console.WriteLine(i);
18
19             Teacher t = new Teacher();
20             Console.WriteLine(t.Name);
21
22
23
24
25             #region
26             //s.Code = "101";
27             //s.Score = 101;
28             //s.Birthday = DateTime.Now;
29             ////s.BirthdayStr = "";
30
31             //Console.WriteLine(s.Code);
32             //Console.WriteLine(s.Score);
33             //Console.WriteLine(s.Birthday);
34             //Console.WriteLine(s.BirthdayStr);
35             //Console.WriteLine(s.CodeAndScoreSum);
36             #endregion
37
38
39             Console.ReadLine();
40         }
41     }
42 }