在写代码之余，把写代码过程比较好的一些代码段收藏起来，下面的代码是关于C#枚举类型用户标志位的代码，应该能对各位朋友有用处。

enum Mammalia{ Bison = 1, Human = 2, Mammal = 255}public class MammalCheck{ public static void Main( ) { Mammalia pattern = Mammalia.Bison | Mammalia.Human; Mammalia animal = Mammalia.Bison; if ( (pattern & animal) != 0) { Console.WriteLine ("{0} is a member of ({1}).", animal, pattern); } } }