对于每个带有提交表单的循环

Question

样板间：

public class Room
    {
        public int Id { get; set; }
        public string NumberRoom { get; set; }
        public double CostPerNight { get; set; }
        public virtual Category Category { get; set; }
}

我的视图模型代码

public class RoomModel
    {
        public IList<Room> Rooms { get; set; }
    }

我的剃刀代码：

@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>
             }
        }

控制器：

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)
{
    //
}

传入字典的模型项的类型为“System.Data.Entity.Infrastructure.DbQuery`1[Hotel.BusinessObject.Room]”，但此字典需要“hotel.Models.RoomModel”类型的模型项.

Answer 1

错误消息是不言自明的。你有这个观点

@model hotel.Models.RoomModel

但是由于控制器中的这行代码，您将System.Data.Entity.Infrastructure.DbQuery<Hotel.BusinessObject.Room> 的实例传递给您的视图

return View(roomService.GetRoomsByCategory(CategoryId, SelectedDate, NumberNights, NumberPeoples));

您需要传递RoomModel 的实例而不是System.Data.Entity.Infrastructure.DbQuery<Hotel.BusinessObject.Room>。我建议将您的控制器代码更改为以下

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);
}