C#中实现枚举类型的特性扩展和反射获取

    public enum 月定制项目

    {

        [CustomItemAttribute()]

        一点五元夜餐次数 = 1,

        [CustomItemAttribute()]

        二元夜餐次数 = 2,

        [CustomItemAttribute()]

        连班次数 = 3,

        [CustomItemAttribute()]

        甲类保健津贴次数 = 4,

        [CustomItemAttribute()]

        乙类保健津贴次数 = 5,

        [CustomItemAttribute()]

        周六加班次数 = 6,

        [CustomItemAttribute()]

        周日加班次数 = 7,

        [CustomItemAttribute()]

        零点夜班次数 = 8,

        [CustomItemAttribute()]

        节假日加班次数 = 9,

        [CustomItemAttribute()]

        四点夜班次数 = 10,

        [CustomItemAttribute()]

        事假天数 = 11,

        [CustomItemAttribute()]

        病假天数 = 12,

        [CustomItemAttribute()]

        旷工天数 = 13,

        [CustomItemAttribute()]

        公差天数 = 14,

        [CustomItemAttribute()]

        探亲天数 = 15,

        [CustomItemAttribute(CustomApplyType.工区员工)]

        效益工资 = 16

    }



    public enum CustomApplyType

    {

        工区员工 = 1,

        机关员工 = 2,

        所有员工 = 3

    }



    [AttributeUsage(AttributeTargets.Field)]

    public class CustomItemAttribute : System.Attribute

    {

        protected CustomApplyType _customApplyType;

        public CustomItemAttribute(CustomApplyType customApplyType)

        {

            this._customApplyType = customApplyType;

        }

        public CustomItemAttribute()

            : this(CustomApplyType.所有员工)

        {

        }



        public CustomApplyType CustomApplyType 

        { 

            get { return this._customApplyType; } 

        }

    }



    class Application

    {

        [STAThread]

        static void Main(string[] args)

        {

            FieldInfo[] fs = typeof(月定制项目).GetFields();

            object enumInstance = 

                typeof(月定制项目).Assembly.CreateInstance(typeof(月定制项目).FullName);

            foreach (FieldInfo f in fs)

            {

                CustomItemAttribute[] cas = 

                    (CustomItemAttribute[])f.GetCustomAttributes(typeof(CustomItemAttribute), true);

                if (cas.Length > 0)

                {

                    Console.WriteLine(f.GetValue(enumInstance));

                    Console.WriteLine(Convert.ToSingle((int)f.GetValue(enumInstance)));

                    Console.WriteLine(cas[0].CustomApplyType.ToString());

                }

            }

            Console.Read();



        }

    }