Question

我收到此错误

传递到字典中的模型项是类型的 'Pms_system.Models.MaintenanceCheckListModel'，但是这本字典需要类型的模型项 'System.Collections.Generic.IEnumerable`1 [Pms_system.Models.MaintenanceCheckListModel]'。

我在我的控制器中有这个

public ActionResult MaintenanceCheckList (MaintenanceCheckListModel check)
    {
       List<MaintenanceCheckListModel> checklist = db.checklists.Select( s => new MaintenanceCheckListModel()
        {
            FirstMonth = check.FirstMonth,
            SecondMonth = check.SecondMonth,
            ThirdMonth = check.ThirdMonth,
            FourthMonth = check.FourthMonth,
            FifthMonth = check.FifthMonth,
            SixthMonth = check.SixthMonth,
            SeventhMonth = check.SeventhMonth,
            EighthMonth = check.EighthMonth,
            NinethMonth = check.NinethMonth ,
            TenthMonth = check.TenthMonth,
            EleventhMonth = check.EleventhMonth,
            TwelvethMonth = check.TwelvethMonth
        }).ToList();

        return View(check);

    }

这是我的观点

{
 @model IEnumerable<Pms_system.Models.MaintenanceCheckListModel>

@{
ViewBag.Title = "MaintenanceCheckList";
Layout = "~/Views/Shared/_Layout.cshtml";
}

<h2>MaintenanceCheckList</h2>

<p>
    @Html.ActionLink("Create New", "Create")
</p>
<table>
<tr>
    <th>
        @Html.DisplayNameFor(model => model.FirstMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.SecondMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.ThirdMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.FourthMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.FifthMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.SixthMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.SeventhMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.EighthMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.NinethMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.TenthMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.EleventhMonth)
    </th>
    <th>
        @Html.DisplayNameFor(model => model.TwelvethMonth)
    </th>
    <th></th>
</tr>

@foreach (var item in Model) {
<tr>
    <td>
        @Html.DisplayFor(modelItem => item.FirstMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.SecondMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.ThirdMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.FourthMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.FifthMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.SixthMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.SeventhMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.EighthMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.NinethMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.TenthMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.EleventhMonth)
    </td>
    <td>
        @Html.DisplayFor(modelItem => item.TwelvethMonth)
    </td>

</tr>
}

错误的解决方案是什么？

Answer 1

将您的控制器操作更改为以下内容：

public ActionResult MaintenanceCheckList (MaintenanceCheckListModel check)
{
       List<MaintenanceCheckListModel> checklist = db.checklists.Select( s => new MaintenanceCheckListModel()
        {
            FirstMonth = check.FirstMonth,
            SecondMonth = check.SecondMonth,
            ThirdMonth = check.ThirdMonth,
            FourthMonth = check.FourthMonth,
            FifthMonth = check.FifthMonth,
            SixthMonth = check.SixthMonth,
            SeventhMonth = check.SeventhMonth,
            EighthMonth = check.EighthMonth,
            NinethMonth = check.NinethMonth ,
            TenthMonth = check.TenthMonth,
            EleventhMonth = check.EleventhMonth,
            TwelvethMonth = check.TwelvethMonth
        }).ToList();

        return View(checklist);
}

您将参数作为视图模型传递，其类型不同。

Answer 2

这是由于类型不同。您需要将相同的类型传递给您的视图。根据此

更改您的控制器或视图

MaintenanceCheckListModel check
 return View(check);

 @model Pms_system.Models.MaintenanceCheckListModel

或

List<MaintenanceCheckListModel> checklist = db.checklists.Select( s => new MaintenanceCheckListModel(){}).ToList();
 return View(checklist);

 @model List<Pms_system.Models.MaintenanceCheckListModel>

修改
另外，如果您使用的是List或Ienumerable，则必须循环浏览视图中的所有值。

Answer 3

您正在传递MaintenanceCheckListModel的对象，而您期望IEnumerable。请通过清单而不是从控制器查看。

只需更改返回查看（检查）以返回查看（核对清单）;

MVC列表视图和模型

3 个答案: