EF6 Including references of Collections in Entity

Question

I'm setting up a context to be read as follows:

Now, the last include is a collection and each entity in that collection has a relation (1-to-1) to an entity called SERVICE_INFO

How do I include that entity on each BILL_INFO_DETAIL ?

Answer 1

Maybe you can just use,if there is navigation properties in table(BILL_INFO_DETAI):

   Include( i=> i.BILL_INFO_DETAIL.SELECT( b => b.SERVICE_INFO ));

reference: https://docs.microsoft.com/zh-tw/ef/ef6/querying/related-data

Answer 2

If I understood you correctly. Maybe what you want is the ThenInclude()

.Include( i=> i.BILL_INFO_DETAIL).ThenInclude(b => b.SERVICE_INFO)