我有一个强类型的局部视图,它在_Layout.cshtml中呈现,因此它包含在每个页面中。在该局部视图中,我试图渲染另一个局部视图。我创建了一个视图模型(ShoutboxView),用作父视图的模型。当尝试在其中呈现子部分视图(_ShoutList)时,我收到的错误是我传入的模型的类型不正确:
传递到字典中的模型项的类型为“MvcForumTest.ViewModels.ShoutboxView”,但此字典需要类型为“System.Collections.Generic.IEnumerable`1 [MvcForumTest.Models.Shout]”的模型项。 / p>
请参阅以下代码:
模型(Shout.cs):
namespace MvcForumTest.Models
{
public class Shout
{
public int Id { get; set; }
public string Author { get; set; }
public string Message { get; set; }
public DateTime EntryDate { get; set; }
public Shout()
{
Id = 1;
Author = "TestUser";
EntryDate = DateTime.Now;
}
}
}
查看模型(ShoutboxView.cs)
namespace MvcForumTest.ViewModels
{
public class ShoutboxView
{
public Shout newShout { get; set; }
public IEnumerable<Shout> Shouts { get; set; }
}
}
Controller(ShoutController.cs):
namespace MvcForumTest.Controllers
{
public class ShoutController : Controller
{
private ForumsContext db = new ForumsContext();
public ActionResult Index()
{
ShoutboxView shoutboxView = new ShoutboxView
{
newShout = new Shout(),
Shouts = (from s in db.Shouts
orderby s.EntryDate descending
select s).Take(20)
};
return PartialView(shoutboxView);
}
[HttpPost]
public ActionResult AddShout(ShoutboxView shoutbox)
{
Shout shout = new Shout();
shout.Message = shoutbox.newShout.Message;
if (ModelState.IsValid)
{
db.Shouts.Add(shout);
db.SaveChanges();
return PartialView("Index", shoutbox);
}
//return PartialView("_ShoutList", db.Shouts);
return PartialView("Index", shoutbox);
}
}
}
索引部分视图(Index.cshtml)。这是我收到错误的地方。在“@ Html.Partial(”_ ShoutList“,Model.Shouts)”line:
@model MvcForumTest.ViewModels.ShoutboxView
@using (Ajax.BeginForm("AddShout", "Shout", new AjaxOptions { UpdateTargetId = "shoutboxWrapper", InsertionMode = InsertionMode.Replace}))
{
@Html.EditorFor(model => model.newShout.Message)
<input type="submit" value="Submit" />
}
<div id="shoutboxWrapper">
@Html.Partial("_ShoutList", Model.Shouts)
</div>
喊部分视图(_Shoutlist.cshtml):
@model IEnumerable<MvcForumTest.Models.Shout>
@foreach (var item in Model)
{
<div class="shout">
<table>
<tr>
<td class="shoutDelete">
@Html.ActionLink("Delete", "Delete", new { id=item.Id })
</td>
<td class="shoutAuthor">
@Html.DisplayFor(model => item.Author)
</td>
<td class="shoutDate">
@Html.DisplayFor(model => item.EntryDate)
</td>
</tr>
<tr>
<td class="shoutMessage">
@Html.DisplayFor(model => item.Message)
</td>
</tr>
</table>
</div>
}
我该如何解决这个问题?我是否应该调用@Html.Partial
以外的其他内容来呈现子视图?或者我应该通过另一种方式传递子模型吗?
编辑:
_Layout.cshtml:
<div id="body">
@RenderSection("featured", required: false)
<section class="content-wrapper main-content clear-fix">
@Html.Action("Index", "Shout")
@RenderBody()
</section>
</div>
答案 0 :(得分:1)
我通过ShoutController中的以下更改重新创建了您的项目:
var shouts = (from s in db.Shouts
orderby s.EntryDate descending
select s)
.Take(20)
.ToList();
shouts.Add(new Shout{Author = "T", EntryDate = DateTime.Now, Id = 1, Message = "some message"});
shouts.Add(new Shout { Author = "T2", EntryDate = DateTime.Now, Id = 2, Message = "some message2" });
var shoutboxView = new ShoutboxView
{
newShout = new Shout(),
Shouts = shouts
};
return PartialView(shoutboxView);
并且在访问〜/ Shout / Index时加载正常。你说在_Layout.cshtml里面有一个强类型的局部视图。索引是局部视图吗?如果是这样的话,那么使用_Layout.cshtml的完整视图是什么?那个动作方法是什么?这将是要查看的代码。
答案 1 :(得分:0)
我认为你应该选择Shouts AsEnumerable()。
return PartialView("_ShoutList", db.Shouts.AsEnumerable());