public IActionResult Confirm(int id) { int[] seatIds = (int[])TempData["SeatIds"]; TempData.Keep("SeatIds"); List <int> seatNumbers = sqlTheaterData.GetSeatNumbers(seatIds); var model = new ConfirmViewModel { Viewing = sqlTheaterData.GetViewingById(id), SeatNumbers = seatNumbers }; return(View(model)); }