枚举类型绑定到字典

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.ComponentModel;

namespace Test
{
    /// <summary>
    /// 枚举类型绑定到字典
    /// </summary>
    public class EnumUtil
    {
        //枚举缓存池
        private static Dictionary<string, Dictionary<int, string>> _cacheEnumList = new Dictionary<string, Dictionary<int, string>>();

        public static Dictionary<int, string> EnumToDictionary(Type enumType)
        {
            string keyName = enumType.FullName;

            if (!_cacheEnumList.ContainsKey(keyName))
            {
                Dictionary<int, string> dict = new Dictionary<int, string>();

                foreach (int i in Enum.GetValues(enumType))
                {
                    string name = Enum.GetName(enumType, i);

                    string showName = "";
                    object[] attributes = enumType.GetField(name).GetCustomAttributes(typeof(System.ComponentModel.DescriptionAttribute), false);
                    if (attributes != null && attributes.Length > 0) showName = ((System.ComponentModel.DescriptionAttribute)attributes[0]).Description;

                    dict.Add(i, String.IsNullOrEmpty(showName) ? name : showName);
                }

                //做缓存
                object syncObj = new object();
                if (!_cacheEnumList.ContainsKey(keyName))
                {
                    lock (syncObj)
                    {
                        if (!_cacheEnumList.ContainsKey(keyName))
                        {
                            _cacheEnumList.Add(keyName, dict);
                        }
                    }
                }
            }

            return _cacheEnumList[keyName];
        }

        public static string GetEnumShowName(Type enumType, int intValue)
        {
            return EnumToDictionary(enumType)[intValue];
        }
    }



    [System.AttributeUsage(AttributeTargets.Field, Inherited = false, AllowMultiple = false)]
    public sealed class EnumShowNameAttribute : Attribute
    {
        private string showName;
        /// <summary>
        /// 显示名称
        /// </summary>
        public string ShowName
        {
            get { return this.showName; }
        }

        /// <summary>
        /// 构造枚举的显示名称
        /// </summary>
        /// <param name="showname">显示名称 </param>
        public EnumShowNameAttribute(string showname)
        {
            this.showName = showname;
        }
    }
}

 

 

using System;
using System.ComponentModel;

namespace Test
{
    public enum OnlineAuditStatus
    {
        [Description("未处理 ")]
        NotHandle = 0,

        [Description("同意 ")]
        Agree = 1,

        [Description("取消 ")]
        Cancel = 2,

        [Description("撤销 ")]
        Revoke = 3
    }

    public enum RechargeAudit : long
    {
        [EnumShowName("未处理 ")]
        NotHandle = 0,

        [EnumShowName("同意 ")]
        Agree = 1,

        [EnumShowName("取消 ")]
        Cancel = 2,

        [EnumShowName("拒绝 ")]
        Revoke = 3
    }

    class Program
    {
        static void Main()
        {
            var dict = EnumUtil.EnumToDictionary(typeof(OnlineAuditStatus));
            foreach (var item in dict)
            {
                Console.WriteLine("{0}-{1}", item.Key, item.Value);
            }


            var dict2 = EnumUtil.GetEnumShowName(typeof(OnlineAuditStatus), 2);
            Console.WriteLine(dict2);


            Console.ReadLine();
        }
    }
}