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

this is from my project

 var saleHeadBranch = await _context.SaleHeadBranch
 .Include(d => d.SaleDetailBranch)
 .ThenInclude(d => d.Item)
 .Where(d => d.BranchId == loginTkn.branchId)
 .FirstOrDefaultAsync(d => d.Id == id);