Enum 변환

 
static class Enum
    {
        /// 

        /// Enum을 Description으로 변형
        /// 
        /// Enum
        /// Description
        public static string ToDescription(Enum value)
        {
            DescriptionAttribute attribute = value.GetType()
                .GetField(value.ToString())
                .GetCustomAttributes(typeof(DescriptionAttribute), false)
                .SingleOrDefault() as DescriptionAttribute;
            return attribute == null ? value.ToString() : attribute.Description;
        }

        /// 

        /// Enum을 EnumValue으로 변형
        /// 
        /// 을
        /// EnumValue
        public static int? ToValue(Enum value)
        {
            return Convert.ToInt32(value);
        }

        /// 

        /// EnumString값을 Enum으로 변형
        /// 
        /// EnumString
        /// Enum
        public static T ToEnum(string value)
        {
            return (T)Enum.Parse(typeof(T), value);
        }

        /// 

        /// EnumString값을 EnumValue값으로 변형
        /// 
        /// 
        /// EnumValue
        public static int? ToValue(string value)
        {
            try
            {
                return Convert.ToInt32(Enum.Parse(typeof(T), value));
            }
            catch
            {
                return null;
            }
        }

        /// 

        /// Enum Description을 EnumValue로 변형
        /// 
        /// description
        /// EnumValue
        public static int? DescriptionToValue(string description)
        {
            try
            {
                return Convert.ToInt32(Enum.Parse(typeof(T), ToEnum(description).ToString()));
            }
            catch
            {
                return null;
            }
        }

        /// 

        /// Description을 Enum으로 변형
        /// 
        /// Description
        /// Enum
        public static T DescriptionToEnum(string description)
        {
            var type = typeof(T);
            if (!type.IsEnum)
                throw new ArgumentException();
            FieldInfo[] fields = type.GetFields();
            var field = fields.SelectMany(f => f.GetCustomAttributes(typeof(DescriptionAttribute), false), (f, a) => new { Field = f, Att = a })
                            .Where(a => ((DescriptionAttribute)a.Att).Description == description).SingleOrDefault();
            return field == null ? default(T) : (T)field.Field.GetRawConstantValue();
        }

        /// 

        /// EnumList값을 반환
        /// 
        /// EnumList
        public static IList GetValues()
        {
            IList list = new List();

            foreach (var value in Enum.GetValues(typeof(T)))
            {
                list.Add((T)value);
            }

            return list;
        }
    }

 

테스트

 

enum ColorType
{
    [Description("빨간색")]
    Red,
    [Description("녹색")]
    Green,
    [Description("파랑색")]
    Blue
}

 

Enum<ColorType>.GetValues();

Enum<ColorType>.ToDescription(ColorType.Green);
Enum<ColorType>.ToValue(ColorType.Red);

Enum<ColorType>.ToEnum(ColorType.Red.ToString());
Enum<ColorType>.ToValue(ColorType.Red.ToString());

Enum<ColorType>.DescriptionToValue("빨간색");
Enum<ColorType>.DescriptionToEnum("빨간색");