EnumExtensions_Partial1.cs

 public static class EnumExtensions
 {
        /// <summary>
        /// Converts the enum member names into an enumberable of strings.
        /// </summary>
        /// <typeparam name="TEnum">A valid enum type.</typeparam>
        /// <returns>An enumerable of strings based on the enum members.</returns>
        public static IEnumerable<string> GetNames<TEnum>() where TEnum : struct
        {
            var typeInfo = ValidateEnum<TEnum>();

            return typeInfo.DeclaredFields.Where(f => f.IsLiteral && (f.IsPublic | f.IsStatic)).Select(f => f.Name);
        }
        
        /// <summary>
        /// Validates that the type is a valid enum, throws an ArgumentException if not.
        /// </summary>
        /// <typeparam name="TEnum">A valid enum type.</typeparam>
        /// <returns>Returns the typeinfo for the enum if a valid enum was specified.</returns>
        private static TypeInfo ValidateEnum<TEnum>()
        {
            var type = typeof(TEnum);

            var typeInfo = type.GetTypeInfo();

            if (!typeInfo.IsEnum)
                throw new ArgumentException(String.Format("Type '{0}' is not an enum", type.Name));

            return typeInfo;
        }
  }