Question

这是我的控制器，在select new我应该使用什么？如果我使用任何类名，它会显示错误，如名称在此模型中找不到？

这里是控制器代码：

public class HomeController : Controller
{
    Database1Entities db = new Database1Entities();

        public ActionResult Index()
        {
            return View();

        }

        public ActionResult details()
        {

          var myParts = (from p in db.emps
                          join d in db.depts on p.Eid equals d.Eid
                          select new
                         { 
                            name  =p.name,
                             address = p.address,
                              number=d.number,
                               sub=d.sub
                                }).ToList();

            return View(myParts);

          }
        }    
    }

我的索引页面如果我给出类名或表名，我应该在模型中给出什么？如果我给出类名，那么我有两个类，我在上面的模型中给出了哪个类

这里是这个索引页面代码：

@model  IEnumerable<two2.Models.mass>


@{
    ViewBag.Title = " Deaprtment name ";
}

<h2>Index</h2>
@{
    ViewBag.Title = "Department";
}


<table>
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.name)
        </th>
        <th>
            @Html.DisplayNameFor (model => model.address)
        </th>
        <th>
            @Html.DisplayNameFor (model => model.sub)
        </th>
        <th>
            @Html.DisplayNameFor (model => model.mark)
        </th>

        <th></th>
    </tr>

    @foreach (var item in Model)
    {
        <tr>
            <td>
                @Html.DisplayFor(modelItem => item.name)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.address)
                       </td>
            <td>
                @Html.DisplayFor(modelItem => item.sub)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.mark)
            </td>
        </tr>
    }
</table>

和我的观看页面

在索引页面中显示object not found 并在foreach语句中显示错误

@model two2.Models.mass
@{
    ViewBag.Title = "deatils";
}

@using (@Html.BeginForm())
{

    @Html.LabelFor(model => model.name)

    @Html.TextBoxFor(model => model.name)
    <br /><br />
    @Html.LabelFor(model => model.address)

    @Html.PasswordFor(model => model.address)
    <br /><br />
    <br /><br />
    @Html.LabelFor(model => model.sub)

    @Html.PasswordFor(model => model.sub)
    <br /><br />
    <br /><br />
    @Html.LabelFor(model => model.mark)

    @Html.PasswordFor(model => model.mark)
    <br /><br />
    <button>Login</button>
}

我不知道应该使用什么，以便我的类名或表名以及如何在视图中显示

Answer 1

你应该在Action中使用相同的类名，它在View中使用，如：

constructor(private _router: Router) {
    this._router.events.subscribe((event: NavigationError) => {
      if (event.error) {
        this._router.navigate(['/error']);
      }
    });
  }

如果您在View中使用：

public ActionResult details()
{
    var myParts = (from p in db.emps
                  join d in db.depts on p.Eid equals d.Eid
                  select two2.Models.mass
                 { 
                    Eid = p.Eid,
                    name = p.name,
                    address = p.address,
                    number = d.number,
                    mark = d.mark,       // <- you need to pass mark as it is used in View
                    sub = d.sub
                }).ToList();

    return View(myParts);
}

类@model IEnumerable<two2.Models.mass>是一种ViewModel，它应该只包含View中所需的那些字段：

two2.Models.mass

在mvc4中使用linq连接两个表时出错

1 个答案: