C#装箱拆箱
我看c#本质论的时候有段关于装箱拆箱的主题看不懂，希望有人能解释下，

C# code

class Program    {        static void Main(string[] args)        {            Angle angle = new Angle(25, 58, 23);            object objectAngle = angle;//Box            Console.WriteLine(((Angle)objectAngle).Hours);            //Unbox and discard            ((Angle)objectAngle).MoveTo(26, 58, 23);            Console.WriteLine(((Angle)objectAngle).Hours);            //Box, modify and discard            ((IAngle)angle).MoveTo(26, 58, 23);            Console.WriteLine(((Angle)angle).Hours);            //Modify heap directly            ((IAngle)objectAngle).MoveTo(26, 58, 23);            Console.WriteLine(((Angle)objectAngle).Hours);            Console.ReadKey();        }    }    struct Angle : IAngle    {        public Angle(int hours, int minutes, int seconds)        {            _Hours = hours;            _Minutes = minutes;            _Seconds = seconds;        }        private int _Hours;        public int Hours        {            get            {                return _Hours;            }        }        private int _Minutes;        public int Minutes        {            get            {                return _Minutes;            }        }        private int _Seconds;        public int Seconds        {            get            {                return _Seconds;            }        }        public Angle Move(int hours, int minutes, int seconds)        {            return new Angle(Hours + hours, Minutes + minutes, Seconds + seconds);        }        #region IAngle 成员        public void MoveTo(int hours, int minutes, int seconds)        {            _Hours = hours;            _Minutes = minutes;            _Seconds = seconds;        }        #endregion    }

控制台输出的是25,25,25,26.。。不懂为什么会这样。

[解决办法]
把值类型转成object就是装箱啊
相反就是拆箱
int i = 123;
object o = (object)i; // boxing


o = 123;
i = (int)o; // unboxing
[解决办法]
楼上正解