Include collection in Entity Framework Core

Question

For example, I have those entities:

public class Book
{
    [Key]
    public string BookId { get; set; }
    public List Pages { get; set; }
         


        

Answer 1

Try accessing PageTitle directly in ThenInclude:

using (var dbContext = new BookContext())
{
    var bookPages = dbContext
    .Book
    .Include(x => x.Pages)
    .ThenInclude(y => y.PageTitle)
    .SingleOrDefault(x => x.BookId == "some example id")
    .Select(x => x.Pages)
    .Select(x => x.PageTitle)
    .ToList();
}