Html.DisplayFor在mvc 4 Razor视图中不使用它返回值

Question

我将一些虚拟数据传递给我的View只是为了有一些工作:

public ActionResult Index()
        {
            ViewBag.Message = "Create table";
            var model = new List<Auction>();
            model.Add(new Auction
            {
                Title = "First Title",
                Description = "First Description"
            });
            model.Add(new Auction
            {
                Title = "Second Title",
                Description = "Second Description"
            });
            model.Add(new Auction
            {
                Title = "Third Title",
                Description = "Third Description"
            });
            model.Add(new Auction
            {
                Title = "Fourht Title",
                Description = "Fourth Description"
            });

            return View(model);
        }

我在我的视图中显示:

@model List<Ebuy.Website.Models.Auction>

@{
    ViewBag.Title = "Home Page";
}


@using (Html.BeginForm())
{
    <table border="1" >
        @for (var i = 0; i < Model.Count(); i++)
        {
            <tr>

                <td>
                    @Html.HiddenFor(x => x[i].Id)
                    @Html.DisplayFor(x => x[i].Title)
                </td>
                <td>
                    @Html.EditorFor(x => x[i].Description)
                </td>
            </tr>
        }
    </table>

    <button type="submit">Save</button>
}

现在我想对提交的数据进行一些操作:

 [HttpPost]
        public ActionResult Index(List<Auction> model)
        {
            var test = model;
            model[1].Title = "Test";
            return View(model);
        }

但是当我调试它时,我看到Description属性被发回,但Title属性没有值.如上所示,我用它们显示它们@Html.DisplayFor(x => x[i].Title).这是一些默认行为还是我做错了什么？

Answer 1

@Html.DisplayFor 不输出输入字段(或任何表单字段),因此它不是表单发布的值的一部分.

如果您希望将标题作为表单的一部分发布,则可能需要添加其他标题

@Html.HiddenFor(x => x[i].Title)