For each loop with submitting form - asp.net-mvc

Question

Model Room:
public class Room
{
public int Id { get; set; }
public string NumberRoom { get; set; }
public double CostPerNight { get; set; }
public virtual Category Category { get; set; }
}
My view model code
public class RoomModel
{
public IList<Room> Rooms { get; set; }
}
My Razor code:
#model hotel.Models.RoomModel
#using (Html.BeginForm("ComfortLevelView", "Category"))
{
for (int i = 0; i < Model.Rooms.Count(); i++)
{
<table class="simple-little-table" cellspacing='0'>
<tr>
<td>#Html.DisplayFor(m => Model.Rooms[i].NumberRoom) </td>
<td>#Html.DisplayFor(m => Model.Rooms[i].Categoryid)</td>
<td>#Html.DisplayFor(m => Model.Rooms[i].NumberOfSeats) </td>
<td>
#{ var result = Model.Rooms[i].CostPerNight * numberNights; }
<p>#ViewBag.NumberNights ночей</p>:#result
</td>
<td>
<input type="submit" id="submit" value="Booking" />
</td>
</tr>
</table>
</div>
}
}
Controller:
public ActionResult ComfortLevelView(int NumberNights, int CategoryId, int NumberPeoples ,DateTime SelectedDate)
{
IRoomService roomService = new RoomService();;
return View(roomService.GetRoomsByCategory(CategoryId, SelectedDate, NumberNights, NumberPeoples));
}
[HttpPost]
public ActionResult ComfortLevelView(RoomModel model)
{
//
}
The model item passed into the dictionary is of type 'System.Data.Entity.Infrastructure.DbQuery`1[Hotel.BusinessObject.Room]', but this dictionary requires a model item of type 'hotel.Models.RoomModel'.

Answer 1

The error message is self explanatory. You have this in your view
#model hotel.Models.RoomModel
but you pass an instance of System.Data.Entity.Infrastructure.DbQuery<Hotel.BusinessObject.Room> to your view because of this line of code in your controller
return View(roomService.GetRoomsByCategory(CategoryId, SelectedDate, NumberNights, NumberPeoples));
You need to pass an instance of RoomModel instead of System.Data.Entity.Infrastructure.DbQuery<Hotel.BusinessObject.Room>. I would suggest changing your controller code to below
public ActionResult ComfortLevelView(int NumberNights, int CategoryId, int NumberPeoples, DateTime SelectedDate)
{
IRoomService roomService = new RoomService();
var rooms = roomService.GetRoomsByCategory(CategoryId, SelectedDate, NumberNights, NumberPeoples);
RoomModel model = new RoomModel();
model.Rooms = rooms.ToList();
return View(model);
}