using System;

using System.Reflection;

using System.Linq;

​

public static class Extensions

{

    /// <summary>

    ///     A generic extension method that aids in reflecting 

    ///     and retrieving any attribute that is applied to an `Enum`.

    /// </summary>

    public static TAttribute GetAttribute<TAttribute>(this Enum enumValue)

        where TAttribute : Attribute

    {

        return enumValue.GetType().GetMember(enumValue.ToString()).First().GetCustomAttribute<TAttribute>();

    }

}

​

public class Program

{

    public static void Main()

    {

        var val = KnownBillingType.Insurance;

        Console.WriteLine(val.GetAttribute<DisplayOverrideAttribute>().Display);

    }

​

    [AttributeUsage(AttributeTargets.Field)]

    public class DisplayOverrideAttribute : Attribute

    {

        public string Display;

        public DisplayOverrideAttribute(string display) => this.Display = display;

    }

​

    public enum KnownBillingType

    {

        [DisplayOverride("Test")]

        Insurance = 1

    }

}