using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using ICSSoft.Frame.Data.Entity;

namespace ICSSoft.Frame.Common
{
    public static class EnumExtfunction
    {
        public static string GetDescription<Attr>(this Enum em) where Attr : AttrDescription
        {
            Type enumType = em.GetType();
            var name = Enum.GetName(enumType, em);
            if (name == null)
                return string.Empty;
            object[] objs = enumType.GetField(name).GetCustomAttributes(typeof(Attr), false);
            if (objs == null || objs.Length == 0)
                return string.Empty;
            Attr attr = objs[0] as Attr;
            return attr.Description;
        }

        public static string GetDescription(this Enum em)
        {
            Type enumType = em.GetType();
            var name = Enum.GetName(enumType, em);
            if (name == null)
                return string.Empty;
            object[] objs = enumType.GetField(name).GetCustomAttributes(typeof(System.ComponentModel.DescriptionAttribute), false);
            if (objs == null || objs.Length == 0)
                return string.Empty;
            System.ComponentModel.DescriptionAttribute attr = objs[0] as System.ComponentModel.DescriptionAttribute;
            return attr.Description;
        }
    }
}