传递linq查询来查看

时间:2012-10-23 18:57:24

标签: asp.net-mvc

我做了一个linq查询,我想传递给视图,但它给了我这个错误

The model item passed into the dictionary is of type 'System.Data.Entity.Infrastructure.DbQuery`1[<>f__AnonymousType4`2[System.String,System.String]]', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable`1

我的ViewModel

  public class ManageScoreViewModel
     {
         public string fullName { get; set; }
         public string teamName { get; set; }
     }

控制器

  public ActionResult Index()
        {
            MyteamViewModel ms = new MyteamViewModel ();
            var vm = (from u in db.Users
                     join tm in db.Team_Members
                     on u.user_id equals tm.user_id
                     join t in db.Teams
                     on tm.team_id equals t.team_id
                     orderby t.name
                     select new { fullName = u.firstName + u.lastName, teamName = t.name });
          //  var vmlist = vm.ToList();

            return View(vm);
        }

视图是IEnumerable类型

@model IEnumerable<CTA2._0.ViewModels.ManageScoreViewModel>
@foreach (var item in Model)
{
    <tr>
        <td>
            @Html.DisplayFor(modelItem => item.fullName)
        </td>
        <td>
            @Html.DisplayFor(modelItem => item.teamName)
        </td>

我尝试将查询转换为列表(var vmlist = vm.ToList();)。没工作。任何帮助将不胜感激。

1 个答案:

答案 0 :(得分:7)

您的视图强烈输入ManageScoreViewModel集合,但您的linq查询使用投影返回匿名对象。您需要返回ManageScoreViewModel个对象的列表。您还可以在linq表达式

上应用ToList()方法

更改

select new { fullName = u.firstName + u.lastName, teamName = t.name });

select new ManageScoreViewModel { fullName = u.firstName + u.lastName,
                                                  teamName = t.name }).ToList();