枚举静态类

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最新推荐文章于 2024-12-31 18:30:00 发布

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本文详细解析了C#中枚举类的使用方法，包括如何获取枚举的所有文字、整数值、转化为int类型及反向转换等操作，并通过实例代码展示了具体应用。

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class Program
    {
        static void Main(string[] args)
        {

            var s = typeof(SendMsgResultCodes).GetIntsFromEnum();
            var a =typeof(SendMsgResultCodes).GetTextsFromEnum();
            var b = SendMsgResultCodes.IP限制.ToInt();

            var c = SendMsgResultCodes.IP限制.ToInt().IntToStringBaseEnum(typeof(SendMsgResultCodes));
            var d = "单个手机号请求发送成功".StringToIntBaseEnum(typeof(SendMsgResultCodes));

            var f = "a".StringToIntBaseEnum(typeof(SendMsgResultCodes));
        }
    }

    public enum SendMsgResultCodes
    {
        多个手机号请求发送成功 = 00,
        IP限制 = 02,
        单个手机号请求发送成功 = 03,
        用户名错误 = 04,
        密码错误 = 05,
        编码错误 = 06,
        发送时间有误 = 07,
        参数错误 = 08,
        手机号码有误 = 09,
        扩展号码有误 = 10,
        余额不足 = 11,
        服务器内部异常 = -1,
    }


   

    public static class EnumExt
    {
        /// <summary>
        /// 获取枚举所有文字
        /// typeof(SendMsgResultCodes).GetTextsFromEnum()
        /// </summary>
        /// <param name="t"></param>
        /// <returns></returns>
        public static List<string> GetTextsFromEnum(this Type t)
        {
            if (t.IsEnum)
            {
                string[] names = Enum.GetNames(t);
                return names.ToList();
            }
            else
            {
                throw new InvalidCastException("非枚举类型不支持该方法");
            }
           
        }
        /// <summary>
        /// 获取枚举所有Int值
        /// typeof(SendMsgResultCodes).GetIntsFromEnum()
        /// </summary>
        /// <param name="e"></param>
        /// <returns></returns>
        public static List<int> GetIntsFromEnum(this Type t)
        {
            var texts = t.GetTextsFromEnum();
            List<int> list = new List<int>();
            foreach (var item in texts)
            {
                int c = (int)Enum.Parse(t, item);
                list.Add(c);
            }
            return list;
        }

        /// <summary>
        /// 将枚举转化为int型
        /// SendMsgResultCodes.IP限制.ToInt()
        /// </summary>
        /// <param name="e"></param>
        /// <returns></returns>
        
        public static int ToInt(this Enum e)
        {
            return (int)System.Enum.Parse(e.GetType(), e.ToString());
        }

        /// <summary>
        /// 字符串转化枚举中的int
        /// "单个手机号请求发送成功".StringToIntBaseEnum(typeof(SendMsgResultCodes))
        /// </summary>
        /// <param name="s"></param>
        /// <param name="t"></param>
        /// <returns></returns>
        public static int StringToIntBaseEnum(this string s, Type t)
        {
            var listTexts = t.GetTextsFromEnum();
            var listInts = t.GetIntsFromEnum();
            int i = 0;
            if (!listTexts.Contains(s))
            {
                throw new InvalidCastException(s + "不是枚举"+t+"里面的值！");
            }
            foreach (var item in listTexts)
            {

                if (item.Equals(s))
                {
                    return listInts[i];
                }
                i++;
            }
            return 0;
        }
        /// <summary>
        /// int转化为枚举中的字符串
        /// </summary>
        /// <param name="s"></param>
        /// <param name="t"></param>
        /// <returns></returns>
        public static string IntToStringBaseEnum(this int s, Type t)
        {
            var listTexts = t.GetTextsFromEnum();
            var listInts = t.GetIntsFromEnum();
            int i = 0;
            if (!listInts.Contains(s))
            {
                throw new InvalidCastException(s + "不是枚举" + t + "里面的值！");
            }
            foreach (var item in listInts)
            {

                if (item == s)
                {
                    return listTexts[i];
                }
                i++;
            }
            return string.Empty;
        }
    }