C# 通过反射 获取枚举 键值列表

 

• 定义枚举和获取枚举描述方法

   /// <summary>
    /// 流程状态
    /// </summary>
    public enum TaskStateEnum
    {
        [DescriptionAttribute("正常")]
        normal =1,
        [DescriptionAttribute("暂停")]
        pause =2,
        [DescriptionAttribute("已删除")]
        del =3
    }

  /// <summary>
        /// 获取枚举描述
        /// </summary>
        /// <param name="val"></param>
        /// <returns></returns>
        public static string GetDescription(this Enum val)
        {
            var field = val.GetType().GetField(val.ToString());
            var customAttribute = Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute));
            if (customAttribute == null) { return val.ToString(); }
            else { return ((DescriptionAttribute)customAttribute).Description; }
        }

 

• 通过反射获取键值列表

 public static Dictionary<int,string> GetEnumList()
        {
            Dictionary<int, string> dicEnums = new Dictionary<int, string>();
            FieldInfo[] fields = typeof(TaskStateEnum).GetFields();
            if (fields == null || !fields.Any()) return null;
            for (int i = 1; i < fields.Count(); i++)
            {
                var name = fields[i].Name;
                int _itemCode = (int)Enum.Parse(typeof(TaskStateEnum), name);
                Enum itemEnum = (Enum)Enum.Parse(typeof(TaskStateEnum), name);
                string _itemName =GetDescription(itemEnum);
                if (!dicEnums.ContainsKey(_itemCode))
                    dicEnums.Add(_itemCode,_itemName);
            }
            return dicEnums;
        }

• 最终效果