1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6
7 namespace day01
8 {
9 class Class31
10 {
11 static void Main(string[] args)
12 {
13 Student stu1 = new Student("zhangsan", 23);
14 Student stu2 = new Student("zhangsan", 23);
15 Console.WriteLine(stu1.Equals(stu2));
16 Console.ReadKey();
17 }
18 }
19 public class Student
20 {
21 private string name;
22 private int age;
23 public string Name { get; set; }
24 public int Age { get; set; }
25 public Student(string name,int age)
26 {
27 Name = name;
28 Age = age;
29 }
30 public override string ToString()
31 {
32 return "name: " + Name + " age: " + Age;
33 }
34 //public override bool Equals(object obj)
35 //{
36 // if(obj == null)
37 // {
38 // return false;
39 // }
40 // if(obj.GetType() == typeof(Student))
41 // {
42 // Student stu = (Student)obj;
43 // if(stu.Name.Equals(this.Name) && stu.Age == this.Age)
44 // {
45 // return true;
46 // }
47 // else
48 // {
49 // return false;
50 // }
51 // }
52 // else
53 // {
54 // 抛出异常
55 // throw new ArgumentException("类型转换异常");
56 // }
57 //}
58 public override bool Equals(object obj)
59 {
60 if(obj == null)
61 {
62 return false;
63 }
64 if(obj is Student)
65 {
66 Student stu = obj as Student;
67 if(stu.Name.Equals(this.Name) && stu.Age == this.Age)
68 {
69 return true;
70 }
71 else
72 {
73 return false;
74 }
75 }
76 else
77 {
78 throw new ArgumentException("类型转换异常");
79 }
80
81 }
82 //如何重写GetHashCode()方法
83 //先放着
84 public override int GetHashCode()
85 {
86 return base.GetHashCode();
87 }
88 }
89 }
