外键只显示与主键关联的数字

时间:2012-04-07 22:53:18

标签: c# asp.net asp.net-mvc-3 asp.net-mvc-3-areas

我想要一种方法,我可以显示外键的值,而不是显示一个数字。例如,我有以下视图来显示所有评论:

@model IEnumerable<Games.Models.tblReview>

@{
    ViewBag.Title = "Index";
}

<h2>Index</h2>

<p>
    @Html.ActionLink("Create New", "Create")
</p>
<table>
    <tr>
        <th>
            ReviewID
        </th>
        <th>
            Recomendation
        </th>
        <th>
            AvoidOrBuy
        </th>
        <th>
            Score
        </th>
        <th>
            GameIDFK
        </th>
        <th>
            UserName
        </th>
        <th></th>
    </tr>

@foreach (var item in Model) {
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.ReviewID)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Recomendation)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.AvoidOrBuy)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.Score)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.GameIDFK)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.UserName)
        </td>
        <td>
            @Html.ActionLink("Edit", "Edit", new { /* id=item.PrimaryKey */ }) |
            @Html.ActionLink("Details", "Details", new {  id=item.ReviewID }) |
            @Html.ActionLink("Delete", "Delete", new { /* id=item.PrimaryKey */ })
        </td>
    </tr>
}

</table>

我想要一种方式,其中GameIDFK显示游戏的名称,而不是我的控制器显示此信息是基本的数字将显示在这里:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Games.Models;

namespace Games.Controllers
{
    public class ShowAllReviewsController : Controller
    {
        //
        // GET: /ShowAllReviews/

        public ActionResult Index()
        {
            using (var db = new gamezoneDBEntities())
            {

                return View(db.tblReviews.ToList());
            }
        }

        //
        // GET: /ShowAllReviews/Details/5

        public ActionResult Details(int id)
        {
            return View();
        }

        //
        // GET: /ShowAllReviews/Create

        public ActionResult Create()
        {
            return View();
        } 

        //
        // POST: /ShowAllReviews/Create

        [HttpPost]
        public ActionResult Create(FormCollection collection)
        {
            try
            {
                // TODO: Add insert logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }

        //
        // GET: /ShowAllReviews/Edit/5

        public ActionResult Edit(int id)
        {
            return View();
        }

        //
        // POST: /ShowAllReviews/Edit/5

        [HttpPost]
        public ActionResult Edit(int id, FormCollection collection)
        {
            try
            {
                // TODO: Add update logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }

        //
        // GET: /ShowAllReviews/Delete/5

        public ActionResult Delete(int id)
        {
            return View();
        }

        //
        // POST: /ShowAllReviews/Delete/5

        [HttpPost]
        public ActionResult Delete(int id, FormCollection collection)
        {
            try
            {
                // TODO: Add delete logic here

                return RedirectToAction("Index");
            }
            catch
            {
                return View();
            }
        }
    }
}

有没有办法让我可以获得游戏外键,因为这个网站将用于新来的游戏玩家,我想知道哪些游戏很好玩,不希望用户点击评论,只看到一个号码,没有游戏名称。

你能帮忙吗

编辑:

我在视图中使用了以下内容:

@Html.DisplayFor(modelItem => item.tblGame.GameName)

但它崩溃并发出以下错误:

The ObjectContext instance has been disposed and can no longer be used for operations that require a connection.

编辑2:

namespace Games.Models
{
    using System;
    using System.Collections.Generic;

    public partial class tblReview
    {
        public int ReviewID { get; set; }
        public string Recomendation { get; set; }
        public string AvoidOrBuy { get; set; }
        public string Score { get; set; }
        public int GameIDFK { get; set; }
        public string UserName { get; set; }

        public virtual tblGame tblGame { get; set; }
    }

1 个答案:

答案 0 :(得分:1)

您可能需要考虑using ViewModel classes,但我认为如果您修改控制器以使用类似

的内容
 return View(db.tblReviews.Include("tblGame").ToList());

您可以在视图中使用该属性,如上所述。