using System;

​

public class Program

{

    public static void Main()

    {

        var enumType = typeof (Foo<>.Bar);

        var underlyingType = Enum.GetUnderlyingType(enumType);

        Console.WriteLine(enumType.IsEnum);

        foreach (var value in Enum.GetValues(enumType))

        {

            Console.WriteLine("{0} = {1}", value, Convert.ChangeType(value,underlyingType));

        }

    }

}

​

public class Foo<T>

{

    public enum Bar

    {

        A = 1,

        B = 2

    }

}