c# 操作符重载

  1 class Namer
  2     {
  3         private string FirstName;
  4         private string LastName;
  5 
  6         public Namer()
  7         {
  8             this.Init(null, null);
  9         }
 10 
 11         public Namer(string fn, string ln)
 12         {
 13             this.Init(fn, ln);
 14         }
 15 
 16         private void Init(string fn, string ln)
 17         {
 18             this.FirstName = fn;
 19             this.LastName = ln;
 20         }
 21 
 22         /// <summary>
 23         /// 重载运算符true
 24         /// </summary>
 25         /// <param name="n"></param>
 26         /// <returns>如果姓名中姓或名有一个为空，就返回假</returns>
 27         public static bool operator true(Namer n)
 28         {
 29             if (n.FirstName == null || n.LastName == null)
 30                 return false;
 31             else
 32                 return true;
 33         }
 34 
 35         /// <summary>
 36         /// 重载运算符false
 37         /// </summary>
 38         /// <param name="n"></param>
 39         /// <returns></returns>
 40         public static bool operator false(Namer n)
 41         {
 42             if (n.FirstName == null || n.LastName == null)
 43                 return false;
 44             else
 45                 return true;
 46         }
 47 
 48         /// <summary>
 49         /// 重载运算符==
 50         /// </summary>
 51         /// <param name="n1"></param>
 52         /// <param name="n2"></param>
 53         /// <returns></returns>
 54         public static bool operator ==(Namer n1, Namer n2)
 55         {
 56             if (n1.FirstName == n2.FirstName && n1.LastName == n2.LastName)
 57                 return true;
 58             else
 59                 return false;
 60         }
 61 
 62         /// <summary>
 63         /// 重载运算符！=
 64         /// </summary>
 65         /// <param name="n1"></param>
 66         /// <param name="n2"></param>
 67         /// <returns></returns>
 68         public static bool operator !=(Namer n1, Namer n2)
 69         {
 70             if (n1.FirstName != n2.FirstName || n1.LastName != n2.LastName)
 71                 return true;
 72             else
 73                 return false;
 74         }
 75 
 76         /// <summary>
 77         /// 重载运算符>
 78         /// </summary>
 79         /// <param name="n1"></param>
 80         /// <param name="n2"></param>
 81         /// <returns></returns>
 82         public static bool operator >(Namer n1, Namer n2)
 83         {
 84             return (n1.FirstName.CompareTo(n2.FirstName) > 0 && n1.LastName.CompareTo(n2.LastName) > 0);
 85         }
 86 
 87         /// <summary>
 88         /// 重载运算符<
 89         /// </summary>
 90         /// <param name="n1"></param>
 91         /// <param name="n2"></param>
 92         /// <returns></returns>
 93         public static bool operator <(Namer n1, Namer n2)
 94         {
 95             return (n1.FirstName.CompareTo(n2.FirstName) < 0 && n1.LastName.CompareTo(n2.LastName) < 0);
 96         }
 97 
 98         /// <summary>
 99         /// 重写方法，必须有,后面的111是乱加的，你也可以写其它的
100         /// </summary>
101         /// <returns></returns>
102         public override int GetHashCode()
103         {
104             return base.GetHashCode() * 111;
105         }
106 
107         /// <summary>
108         /// 重写方法，必须有
109         /// </summary>
110         /// <param name="obj"></param>
111         /// <returns></returns>
112         public override bool Equals(object obj)
113         {
114             return base.Equals(obj);
115         }
116 
117         /// <summary>
118         /// 重写方法，必须有
119         /// </summary>
120         /// <returns></returns>
121         public override string ToString()
122         {
123             return "姓:" + this.FirstName + " 名:" + this.LastName;
124         }
125 
126 
127         public static void Main()
128         {
129             Namer n1 = new Namer("li", "zanhong");
130             Namer n2 = new Namer("ahang", "aan");
131             //Namer n2=new Namer("li","zanhong");
132 
133             if (n1 == n2)
134                 Console.WriteLine("一样的名字");
135             else
136                 Console.WriteLine("不一样的名字");
137             /////////////////////////////////////
138             if (n1 != n2)
139                 Console.WriteLine("不一样的名字成立");
140             else
141                 Console.WriteLine("同样的名字成立");
142             /////////////////////////////////////
143             if (n1 > n2)
144                 Console.WriteLine(n1.ToString() + ">" + n2.ToString());
145             else if (n1 < n2)
146                 Console.WriteLine(n1.ToString() + "<" + n2.ToString());
147             else
148                 Console.WriteLine("没有正确比较");
149 
150             Console.ReadLine();
151         }
152     }
View Code
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原文地址：https://www.cnblogs.com/zhangzhu/p/3243267.html