Why does the ObjectStateManager property not exist in my db context?

Question

I need to return a list of newly added objects from my database context.

I have read that i have to use ObjectStateManager for this purpos. The problem

Answer 1

Try this:

dbContext.Entry(entity).State = EntityState.Modified;

Answer 2

Try this:

var manager = ((IObjectContextAdapter)dbContext).ObjectContext.ObjectStateManager;