//一辆自由车进入 public static void EnterNewFreeCar(Model_FreedomCars newcar) { dal_freecar.InsertNewCar(newcar); }
//删除操作 public void DeleteOneCar(Model_FreedomCars leavecar) { string sql = "delete from freedomcar where carnumbers='" + leavecar.ReturnCarNumbers() + "'"; conn.DBcmd(sql); }