Question

当我尝试使用foreach语句输出表时，它输出2条错误，表明MovieViewModel和MovieVM不存在。

这是Index.cshtml文件的一部分：

  @foreach (MovieViewModel item in MovieVM)
  {
    <tr>
      <td>@item.MovieName</td>
      <td>@item.MovieCategory</td>
      <td>@item.MovieYear
      <td>@item.MoviePrice</td>
    </tr>
  }
</table>

这是MoviesController.cs文件的一部分：

  List<MovieViewModel> MovieVM = new List<MovieViewModel>
  {
    new MovieViewModel {
      MovieID = movie.MovieID,
      MovieName = movie.MovieName,
      MovieDescription = movie.MovieDescription,
      MoviePrice = movie.MoviePrice,
      MovieCategory = movie.MovieCategory,
      MovieYear = movie.MovieYear
    },
  };

  return View(MovieVM);
}

它输出关于foreach的这两个错误：

“类型或名称空间'EmployeeViewModel'在命名空间“ WebApplication3.Models”（您是否缺少程序集参考？）”

和

“名称'MovieVM'在当前上下文中不存在”

Answer 1

您必须在视图中定义模型类型。

@model IEnumerable<MovieViewModel>

@foreach (var item in Model)
{
   <tr>
    <td>@item.MovieName</td>
    <td>@item.MovieCategory</td>
    <td>@item.MovieYear</td>
    <td>@item.MoviePrice</td>
   </tr>
}

样本：https://dotnetfiddle.net/GA0yHD

Answer 2

此数据库连接与错误有关吗？

 public ActionResult Index()
    {
        PAPEntities db = new PAPEntities();
        MoviesData movie = db.MoviesData.SingleOrDefault(x => x.MovieID == 1);

        List<MovieViewModels> MovieVM = new List<MovieViewModels>
            {
                new MovieViewModels {
                 MovieID = movie.MovieID,
                 MovieName = movie.MovieName,
                 MovieDescription = movie.MovieDescription,
                 MoviePrice = movie.MoviePrice,
                 MovieCategory = movie.MovieCategory,
                 MovieYear = movie.MovieYear
                    },
        };


        return View(MovieVM);
    }
}

我的foreach语句输出2个错误

2 个答案: