Just to see another aspect the before and after difference of serializable EntityKeys in the Beta2 of EntityFramework, I simply stored a single Customer entity into viewstate, posted back and then looked at the entity in debug to see that yes, the EntityKey is there.

I went back to my Beta1 VPC and when I try to add a single customer entity object to viewstate, I get all kinds of serialization errors. No point in analyzing them since it works now.

I'll probably explore some asp.net databinding scenarios next.