public List <SelectListSerialization> GetAuthorsByIdForListForBook(int id) { List <SelectListSerialization> authors = new List <SelectListSerialization>(); foreach (var item in _authorDao.GetAuthorsByIdForListForBook(id)) { authors.Add(new SelectListSerialization(item.Id, $"{item.FirstName }{item.LastName }")); } return(authors); }