委托（续2）

⑤手写标准事件

老师留作业学生做作业, 老师再留学生咒骂
 1   public class CustomEvent
 2     {
 3         public static void  show() {
 4             student s = new student()
 5             {
 6                 id = 99,
 7                 Name = "小明"
 8             };
 9             Console.WriteLine($"{s.Name}的作业数量{s.HomeWorkCount}");
10             s.studentHomeWorkToomuch += new TeacherInfo().addHomeWork;
11             s.studentHomeWorkToomuch += new StudentInfo().doHomeWork;
12             s.HomeWorkCount = 5;
13             Console.WriteLine($"{s.Name}的作业数量{s.HomeWorkCount}");
14 
15 
16 
17         }
18         /// <summary>
19         /// 订户:关注事件,事件触发后,自己做出相应的动作
20         /// </summary>
21         public class StudentInfo {
22             public void doHomeWork(object s,EventArgs e) {
23                 Console.WriteLine("***********学生的反应********************");
24                 student stu = (student)s;
25                 HomeWorkEventArgs homeWorkEventArgs = (HomeWorkEventArgs)e;
26                 Console.WriteLine($"学生姓名:{stu.Name}");
27                 Console.WriteLine($"学生作业完成数量:{homeWorkEventArgs.finishedCont}");
28                 Console.WriteLine($"学生未完成作业数量:{homeWorkEventArgs.WillfinishCont}");
29                 Console.WriteLine($"{stu.Name} : 老师你睡了吗?!");
30                 Console.WriteLine("*******************************");
31 
32             }
33         }
34         /// <summary>
35         /// 订户:关注事件,事件触发后,自己做出相应的动作
36         /// </summary>
37         public class TeacherInfo
38         {
39             public void addHomeWork(object s, EventArgs e)
40             {
41                 Console.WriteLine("***********老师的反应********************");
42                 Console.WriteLine("没有写完,放学别走");
43                 Console.WriteLine("*******************************");
44 
45             }
46         }
47         /// <summary>
48         /// 事件的发布者者,发布是按在满足的情况下,触发事件
49         /// </summary>
50         public class student
51         {
52             public int id { get; set; }
53             public string Name { get; set; }
54 
55             private int _homeWorkCount=2;//可以完成数量
56 
57             public int HomeWorkCount
58             {
59                 get
60                 {
61                     return _homeWorkCount;
62                 }
63                 set
64                 {
65                     if (value > _homeWorkCount)
66                     {
67                         //触发
68                         studentHomeWorkToomuch.Invoke(this, new HomeWorkEventArgs()
69                         {
70                             finishedCont = _homeWorkCount,
71                             WillfinishCont = value - _homeWorkCount
72                         });;
73                     }
74                     _homeWorkCount = value;
75                 }
76             }
77             public event EventHandler studentHomeWorkToomuch;
78         }
79         public class HomeWorkEventArgs : EventArgs
80         {
81             public int finishedCont { get; set; }
82             public int WillfinishCont { get; set; }
83         }
84 
85 
86     }
View Code
//ps:不知道我有没有写清需求^_^