获取枚举类型描述

Posted 2020-11-22 liuqiyun

代码修改前：

 switch (months)
                {
                    case "1":
                        nums = "1";
                        break;
                    case "2":
                        nums = "2";
                        break;
                    case "3":
                        nums = "3";
                        break;
                    case "4":
                        nums = "4";
                        break;
                    case "5":
                        nums = "5";
                        break;
                    case "6":
                        nums = "6";
                        break;
                    case "7":
                        nums = "7";
                        break;
                    case "8":
                        nums = "8";
                        break;
                    case "9":
                        nums = "9";
                        break;
                    case "10":
                        nums = "A";
                        break;
                    case "11":
                        nums = "B";
                        break;
                    case "12":
                        nums = "C";
                        break;
                }

代码修改后：

class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(GetMonth("1"));
            Console.WriteLine(GetMonth("10"));
            Console.ReadKey();
        }

        public static string GetMonth(string month)
        {
            var enumValue = (month)Enum.Parse(typeof(month), month);
            var enumAttributes = enumValue.GetType().GetField(enumValue.ToString()).GetCustomAttributes(typeof(DescriptionAttribute), false);
            var attributeValue = ((DescriptionAttribute[])enumAttributes)[0].Description;
            return attributeValue;
        }
    }

    public enum month
    {
        [Description("1")]
        Jan=1,
        [Description("2")]
        Feb =2,
        [Description("3")]
        Mar =3,
        [Description("4")]
        Apr =4,
        [Description("5")]
        May =5,
        [Description("6")]
        Jun =6,
        [Description("7")]
        Jul =7,
        [Description("8")]
        Aug =8,
        [Description("9")]
        Sep =9,
        [Description("A")]
        Oct =10,
        [Description("B")]
        Nov =11,
        [Description("C")]
        Dec =12
    }