Enumeration.cs

using System.Collections.Generic;
using System.Reflection;

namespace Ayra.Core.Enums
{
    // Based on https://lostechies.com/jimmybogard/2008/08/12/enumeration-classes/
    public abstract class Enumeration : IComparable
    {
        public readonly int Id;
        public readonly string Name;

        public Enumeration() { }

        protected Enumeration(int id, string name)
        {
            Id = id;
            Name = name;
        }

        public override int GetHashCode()
        {
            return Id.GetHashCode();
        }

        public override string ToString()
        {
            return Name;
        }

        public static IEnumerable<T> GetAll<T>() where T : Enumeration, new()
        {
            var type = typeof(T);
            var fields = type.GetFields(BindingFlags.Public | BindingFlags.Static | BindingFlags.DeclaredOnly);

            foreach (var info in fields)
            {
                var instance = new T();
                if (info.GetValue(instance) is T locatedValue)
                {
                    yield return locatedValue;
                }
            }
        }

        public int CompareTo(object obj)
        {
            return Id.CompareTo(((Enumeration)obj).Id);
        }
    }
}