这是出了什么问题

  db_2008Entities db = new db_2008Entities();

            var QueryResults = from n in db.cup

                               select n;

            foreach (var d in QueryResults)

            {

                Console.Write(d.area + " " + d.Price + " " + d.ID + "\t");

            }

            Console.WriteLine("\n============================================");

            using (db_2008DataSetTableAdapters.cupTableAdapter adapter = new db_2008DataSetTableAdapters.cupTableAdapter())

            {

                using (db_2008DataSet.cupDataTable dbSet = new db_2008DataSet.cupDataTable())

                {

                    adapter.Fill(dbSet);

                    Console.WriteLine("Row: {0}", dbSet.Rows.Count);

                    //为啥只有一行数据

                    foreach (DataRow n in dbSet.Rows)

                    {

                        Console.Write(n[1] + " " + n[2] + " " + n[0] + "\r");

                    }

                }

            }

            Console.ReadKey();

        }