C#实现旋转走动的指针，像圆形手表那样的指针一样，在一秒一秒走动。不过测试发现，这个指针并不是随着系统时钟走动的，你可以修改代码，完善成一个电子钟程序。-C# implementation of rotation to move a pointer, a pointer round watch like that, as in the second minute walk. But tests found that the pointer does not move as the system clock, you can modify the code into an electronic bell sound program.