I know it's late, but maybe someone else can make use of it in the future. You can achieve what you need using LINQ.
I think that you are having trouble because TestEnum is declared as a private enum. Try marking it as a public enum. The serializer needs to be able to find your enum via reflection in order to serialize it.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.