//return all images q public List <Book> BookBusinessLogic_BookReturnAll() { List <Book> books = new List <Book>(); BookData prodDa = new BookData(); DataTable dataTable = prodDa.BookData_BookReturnAll().Tables[0]; foreach (DataRow row in dataTable.Rows) { Book productImage = new Book(); productImage.bookImgeName = row["productImgeName"].ToString(); // productImage.productImgB64 = row["productImgB64"].ToString(); books.Add(productImage); } return(books); }