EF LINQ include multiple and nested entities

Question

Ok, I have tri-leveled entities with the following hierarchy: Course -> Module -> Chapter

Here was the original EF LINQ statement:

Course course = db         


        

Answer 1

Include is a part of fluent interface, so you can write multiple Include statements each following other

 db.Courses.Include(i => i.Modules.Select(s => s.Chapters))
           .Include(i => i.Lab)
           .Single(x => x.Id == id);