c# - 我必须为我的控制器索引方法提供哪些属性？

Question

我正在为学校建立一个项目。我快到了，但有一个错误我无法修复。我正在做一个自行车预订 asp.net 网站。错误说我将一个列表传递给预订的索引页面，并且它需要一个 IEnumerable。我已经尝试过制作预期的列表，但这也会产生错误。

我已经看到了这个问题的其他修复，但我无法让它工作。

这是我原来的索引方法。

    // GET: Reservations
    public ActionResult Index()
    {
        var reservations = db.Reservations.Include(r => r.Bike).Include(r => r.Customer).Include(r => r.DropoffStore).Include(r => r.PickupStore);
        return View(reservations.ToList());
    }

这是我从其他人那里获得的新控制器索引方法，但我不知道为什么我不会工作：

    // GET: Reservations
    public ActionResult Index()
    {
        var reservations = db.Reservations.Include(r => r.Bike).Include(r => r.Customer).Include(r => r.DropoffStore).Include(r => r.PickupStore);

        IEnumerable<ReservationViewModel> reservationViewModels = new List<ReservationViewModel>();

        foreach (var reservation in reservations)
        {
            var reservationViewModel = new ReservationViewModel
            {
               (PROPERTY)
            };

            reservationViewModels.ToList().Add(reservationViewModel);

        }

        return View(reservationViewModels);
    }

这是我的索引页面：

@model IEnumerable<ASP.NET_Framwork_for_real_bitch.ViewModels.ReservationViewModel>

@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>

<p>
    @Html.ActionLink("Create New", "Create")
</p>
<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.Reservation.Customer.FirstName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Reservation.Customer.LastName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Reservation.Customer.Email)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Reservation.Customer.Gender)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Reservation.DropoffStore_Id)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Reservation.PickupStore_Id)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Reservation.StartDate)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Reservation.EndDate)
        </th>
        <th></th>
    </tr>

@foreach (var item in Model) {
<tr>
    <td>
        @Html.DisplayFor(modelItem => item.Reservation.Customer.FirstName)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.Reservation.Customer.LastName)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.Reservation.Customer.Email)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.Reservation.Customer.Gender)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.Reservation.DropoffStore.StoreName)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.Reservation.PickupStore.StoreName)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.Reservation.StartDate)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.Reservation.EndDate)
    </td>
    <td>
        @Html.ActionLink("Edit", "Edit", new { id = item.Reservation.Id }) |
        @Html.ActionLink("Delete", "Delete", new { id = item.Reservation.Id })
    </td>
</tr>
}

</table>

这是确切的错误：

The model item passed into the dictionary is of type 'System.Collections.Generic.List`1[ASP.NET_Framwork_for_real_bitch.Models.Reservation]', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1[ASP.NET_Framwork_for_real_bitch.ViewModels.ReservationViewModel]'.

我的整个预订视图模型：

using ASP.NET_Framwork_for_real_bitch.Models;
using System;
using System.Collections.Generic;
using System.Data.Entity;
using System.Data.Entity.Infrastructure;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace ASP.NET_Framwork_for_real_bitch.ViewModels
{
    public class ReservationViewModel
    {
        private BikeShoppaModel db = new BikeShoppaModel();
        public Reservation Reservation { get; set; }
        public SelectList DropoffStore_Id { get; private set; }
        public SelectList PickupStore_Id { get; private set; }
        public SelectList Bikes { get; private set; }
        public SelectList CustomerGender { get; set; }
        public int TotalDays { get; set; }
        public double TotalPrice { get; set; }
        public ReservationViewModel()
        {
            DropoffStore_Id = new SelectList(db.Stores, "Id", "StoreName");
            PickupStore_Id = new SelectList(db.Stores, "Id", "StoreName");
            Bikes = new SelectList(db.Bikes, "Id", "Brand");
            CustomerGender = new SelectList(db.Customers, "Id", "Gender");
        }
        public ReservationViewModel(int id) : this()
        {
            Reservation = db.Reservations.Find(id);
            TotalDays = (Reservation.EndDate.Date - Reservation.StartDate.Date).Days + 1;
        }

        public void Save()
        {
            if(Reservation.Id > 0)
            {
                db.Entry(Reservation).State = EntityState.Modified;
            }
            else
            {
                db.Reservations.Add(Reservation);
            }



            db.SaveChanges();
        }   
    }
}

我的预订模型：

public class Reservation
    {
        public int Id { get; set; }

        [ForeignKey("Customer")]
        [Display(Name = "Customer")]
        public int Customer_Id { get; set; }
        public virtual Customer Customer { get; set; }
        [ForeignKey("Bike")]
        public int Bike_Id { get; set; }
        public Bike Bike { get; set; }


        [DataType(DataType.Date)]
        [Column(TypeName = "Date")]
        [Display(Name = "Start date")]
        public DateTime StartDate { get; set; }

        [DataType(DataType.Date)]
        [Column(TypeName = "Date")]
        [Display(Name = "End date")]
        public DateTime EndDate { get; set; }

        [ForeignKey("PickupStore")]
        [Display(Name = "Pickup store")]
        public int PickupStore_Id { get; set; }
        public Store PickupStore { get; set; }

        [ForeignKey("DropoffStore")]
        [Display(Name = "Dropoff store")]
        public int DropoffStore_Id { get; set; }
        public Store DropoffStore { get; set; }
    }

标签： c#asp.netasp.net-mvcdatabaseentity-framework