Enum扩展特性，代替中文属性

由于对英语的天生缺陷，在枚举时一直使用中文，这样就不用看注释就知道枚举意思，今天看到博文

https://www.cnblogs.com/emrys5/p/Enum-rename-htmlhelper.html使用特性代替了直接使用中文作为属性。特意摘抄部分为以后使用方便

枚举特性类：

    /// <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;
        }

    }

枚举帮助类：

     /// <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 = ;
             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 = 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; }
         }

     }

把原文中的out参数替换成返回元组，由于项目是vs2015开发，不能用c#7.0特性，否则用7.0中的值元组应该更好一点。性能和显示友好性都会有改进。