获取变量Description描述

代码运行效果如下：

using System;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using static ConsoleApp1.Program;

namespace ConsoleApp1
{
    internal class Program
    {
        public enum EnumTest
        {
            [Description("enum数据1")]
            enumdata1 = 0,

            [Description("enum数据2")]
            enumdata2 = 1,
        }

        public class DataTest
        {
            [Description("data数据1")]
            public string data1 { get; set; }

            [Description("data数据2")]
            public string data2 { get; set; }
        }


        static void Main(string[] args)
        {
            Console.WriteLine("data1".GetClassText<DataTest>());
            Console.WriteLine("data2".GetClassText<DataTest>());

            Console.WriteLine(EnumTest.enumdata1.GetEnumDesc());
            Console.WriteLine(EnumTest.enumdata2.GetEnumDesc());

            Console.WriteLine(EnumTest.enumdata1.GetEnumCategory());
            Console.WriteLine(EnumTest.enumdata2.GetEnumCategory());
            Console.Read();
        }
    }

    public static class GetName
    {
        /// <summary>
        /// 获取枚举Description描述
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="enumValue"></param>
        /// <returns></returns>
        public static string GetEnumDesc<T>(this T enumValue) where T : Enum
        {
            if (enumValue == null) return null;

            var memberInfo = enumValue.GetType().GetMember(enumValue.ToString()).FirstOrDefault();
            if (memberInfo == null)
                return null;

            var attributeOfType = memberInfo.GetCustomAttributes<DescriptionAttribute>(false).FirstOrDefault();
            if (attributeOfType != null)
            {
                return attributeOfType.Description;
            }
            return enumValue.ToString();
        }

        /// <summary>
        /// 获取枚举元素名字
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="enumValue"></param>
        /// <returns></returns>
        public static string GetEnumCategory<T>(this T enumValue) where T : Enum
        {
            if (enumValue == null) return null;

            var memberInfo = enumValue.GetType().GetMember(enumValue.ToString()).FirstOrDefault();
            if (memberInfo == null)
                return null;

            var attributeOfType = memberInfo.GetCustomAttributes<CategoryAttribute>(false).FirstOrDefault();
            if (attributeOfType != null)
            {
                return attributeOfType.Category;
            }
            return enumValue.ToString();
        }

        /// <summary>
        /// 获取类中变量Description描述
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="Value"></param>
        /// <returns></returns>
        public static string GetClassText<T>(this string Value)
        {
            Type type = typeof(T);
            var property = type.GetProperty(Value);
            var attribute = (DescriptionAttribute)Attribute.GetCustomAttribute(property, typeof(DescriptionAttribute));
            return attribute?.Description;
        }
    }
}