class Program { public string Name; public int Age; public Program(string name ,int age) { Name = name; Age = age; } public static implicit operator int(Program p)//将person 转换为int { return p.Age; } public static implicit operator Program(int i)//将int转换为person { return new Program("n", i); } static void Main(string[] args) { Program temp = new Program("a", 10); //将Program 对象转换为int int age = temp; Console.WriteLine(temp.Name+"'"+age); //把int转换为Program对象 Program program = 11; Console.WriteLine(temp.Name + "'" + age); } }