1     class A : IDisposable
 2     {
 3         public A(float f)
 4         {
 5             p = f;
 6         }
 7 
 8         public float p { get; }
 9 
10         public static implicit operator A(float f)
11         {
12             return new A(f);
13         }
14 
15         public static implicit operator float(A a)
16         {
17             return a.p;
18         }
19 
20         public static explicit operator B(A a)
21         {
22             return new B(a.p * 2);
23         }
24 
25 
26 
27         public void Dispose()
28         {
29         }
30     }
31 
32     class B
33     {
34         public B(float f)
35         {
36             p = f;
37         }
38         public float p { get; }
39 
40         public static explicit operator A(B b)
41         {
42             return new A(b.p * 10f);
43         }
44 
45     }

 1             A a = null;
 2             a?.Dispose();
 3             //初始化构造函数
 4             a = new A(100.12345f);
 5             //把a对象赋值给f,其实这个时候float已经被重载运算了所以不会报错
 6             float f = a;
 7             //把30赋值给a2对象的时候，A类已被重载了
 8             A a2 = 30;
 9             Console.WriteLine( "f是：" + f + "\n");
10             Console.WriteLine("a2.p是：" + a2.p + "\n");
11             B b = (B)a;
12             Console.WriteLine("b.p是：" + b.p + "\n");