/// <summary>
    /// 枚举帮助类
    /// </summary>
    public static class EnumTools
    {
        /// <summary>
        ///  获取当前枚举值的描述和排序
        /// </summary>
        /// <param name="value"></param>
        /// <returns>返回元组Tuple(string,int)</returns>
        public static Tuple<string,int> GetDescription(this Enum value)
        {
            int order = 0;
            string description = string.Empty;

            Type type = value.GetType();

            // 获取枚举
            FieldInfo fieldInfo = type.GetField(value.ToString());

            // 获取枚举自定义的特性DescriptionAttribute
            object[] attrs = fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);
            DescriptionAttribute attr = (DescriptionAttribute)attrs.FirstOrDefault(a => a is DescriptionAttribute);

            description = fieldInfo.Name;

            if (attr != null)
            {
                order = attr.Order;
                description = attr.Name;
            }
            return new Tuple<string,int>(description,order);

        }

        /// <summary>
        /// 获取当前枚举的所有描述
        /// </summary>
        /// <returns></returns>
        public static List<KeyValuePair<int, string>> GetAll<T>()
        {
            return GetAll(typeof(T));
        }

        /// <summary>
        /// 获取所有的枚举描述和值
        /// </summary>
        /// <param name="type"></param>
        /// <returns></returns>
        public static List<KeyValuePair<int, string>> GetAll(Type type)
        {

            List<EnumToolsModel> list = new List<EnumToolsModel>();

            // 循环枚举获取所有的Fields
            foreach (var field in type.GetFields())
            {
                // 如果是枚举类型
                if (field.FieldType.IsEnum)
                {
                    object tmp = field.GetValue(null);
                    Enum enumValue = (Enum)tmp;
                    int intValue =http://www.mamicode.com/ Convert.ToInt32(enumValue);
                    var dec = enumValue.GetDescription();
                    int order= dec.Item2;
                    string showName = dec.Item1; // 获取描述和排序
                    list.Add(new EnumToolsModel { Key = intValue, Name = showName, Order = order });
                }
            }

            // 排序并转成KeyValue返回
            return list.OrderBy(i => i.Order).Select(i => new KeyValuePair<int, string>(i.Key, i.Name)).ToList();

        }
        /// <summary>
        /// 枚举Model
        /// </summary> 
        partial class EnumToolsModel
        {
            public int Order { get; set; }
            public string Name { get; set; }
            public int Key { get; set; }
        }

    }
    /// <summary>
    /// 枚举特性
    /// </summary>
    [AttributeUsage(AttributeTargets.Field, AllowMultiple = false, Inherited = false)]
    public class DescriptionAttribute : Attribute
    {
        /// <summary>
        /// 排序
        /// </summary>
        public int Order { get; set; }

        /// <summary>
        /// 名称
        /// </summary>
        public string Name { get; set; }

        /// <summary>
        /// 定义描述名称
        /// </summary>
        /// <param name="name">名称</param>
        public DescriptionAttribute(string name)
        {
            Name = name;
        }

        /// <summary>
        /// 定义描述名称和排序
        /// </summary>
        /// <param name="name">名称</param>
        /// <param name="order">排序</param>
        public DescriptionAttribute(string name, int order)
        {
            Name = name;
            Order = order;
        }

    }