using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Converters;

using System.ComponentModel;

​

public class Program

{

    [JsonConverter(typeof(StringEnumConverter))]

    public enum FavoriteProductEnum

    {

        Feminino = 1,

        Masculino = 2,

        Infantil = 3,

        Unissex = 4,

        Ambos = 5

    }

    public static T GetValueFromDescription<T>(string description)

        {

            var type = typeof(T);

            if (!type.IsEnum) throw new InvalidOperationException();

​

            var fields = type.GetFields();

            foreach (var field in fields)

            {

                var attribute = Attribute.GetCustomAttribute(field, typeof(DescriptionAttribute)) as DescriptionAttribute;

                if (attribute != null)

                {

                    if (attribute.Description.Equals(description, StringComparison.InvariantCultureIgnoreCase))

                        return (T)field.GetValue(null);

                }

                else

                {

                    if (field.Name.Equals(description, StringComparison.InvariantCultureIgnoreCase))

                        return (T)field.GetValue(null);

                }

            }

            throw new ArgumentException("Not found.", "description");

        }

    public static void Main()

    {

        var e = GetValueFromDescription<FavoriteProductEnum>("MASCULINO");

        Console.WriteLine(e.GetType());

    }

}