using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        foreach (BiasCode biasCode in new BiasCode().Values())

        {

            DisplayEnum(biasCode);

        }

        foreach (RushMusician rushMusician in new RushMusician().Values())

        {

            DisplayEnum(rushMusician);

        }

    }

    public static void DisplayEnum(Enum theEnum)

    {

        Console.WriteLine(theEnum); 

    }

}

​

public enum BiasCode

{

    Unknown,

    OC,

    MPP

}

​

public enum RushMusician

{

    Geddy,

    Alex,

    Neil    

}

​

public static class EnumExtensions

{

   // Don't use generics here. This way this extension method will only be available to enums.

   public static List<Enum> Values(this Enum theEnum)

   {

       return Enum.GetValues(theEnum.GetType()).Cast<Enum>().ToList();

   }

   // Original method using generics:

   //public static List<T> Values<T>(this T theEnum)

   //    where T : struct,  IComparable, IFormattable, IConvertible

   //{

   //    if (!typeof(T).IsEnum) 

   //        throw new InvalidOperationException(string.Format("Type {0} is not enum.", typeof(T).FullName)); 

​

   //    return Enum.GetValues(theEnum.GetType()).Cast<T>().ToList();

   //}

}