控制器发布操作无法捕获对象列表 [英] controller post action not able catch list of objects

问题描述

它可能重复了一个问题，我搜索了所有内容，但不满意，所以我在这里发布问题.

It may duplicate question, i have searched all over but couldn't satisfied, so i am posting here question.

我有一个对象(从实体框架生成)，

I have object as (generated from entity framework),

 public partial class Usp_Sel_NotEnteredStringResources_Result
{

    public string name { get; set; }
    public Nullable<int> Value { get; set; }

    public int StringResourceId { get; set; }
    public Nullable<int> LanguageId { get; set; }
} 

我创建的视图，

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

<h2>ResourceEntry</h2>

@using (Html.BeginForm("ResourceEntry", "LangResource", FormMethod.Post))
{

   <fieldset>
<table>


 @for (int i = 0; i < Model.ToList().Count; i++)
 {
       <tr>
        <td>@Html.DisplayFor(m => Model.ElementAt(i).name)</td>
        <td>@Html.TextBoxFor(m => Model.ElementAt(i).Value)</td>

           @Html.HiddenFor(m => Model.ElementAt(i).LanguageId)
           @Html.HiddenFor(m => Model.ElementAt(i).name)
           @Html.HiddenFor(m => Model.ElementAt(i).StringResourceId)                 
    </tr> 
 }

</table>
       <p>
            <input type="submit" value="Save" />
        </p>
          </fieldset>
}

和控制器为

 [HttpPost]
        public ActionResult ResourceEntry(List<Usp_Sel_NotEnteredStringResources_Result> list)
        {
           // here getting the null value for list
            // ??????  
            return View(list);
        }

提交表单控制器后，列表的值变为空值，代码有什么问题?

After submitting the form controller gets null value for list, what is wrong with code??

推荐答案

您不能使用.ElementAt().如果检查生成的html，您会看到name属性与您的模型没有关系.

You cannot use .ElementAt(). If you inspect the html your generating you will see that the name attribute has no relationship to your model.

您的模型需要实现IList<Usp_Sel_NotEnteredStringResources_Result>并使用for循环

You model needs to implemet IList<Usp_Sel_NotEnteredStringResources_Result> and use a for loop

@for (int i = 0; i < Model.Count; i++)
{
    <tr>
        <td>@Html.DisplayFor(m => m[i].name)</td>
        <td>
            @Html.TextBoxFor(m => m.[i]Value)
            // note you hidden inputs should be inside a td element
            @Html.HiddenFor(m => m[i].LanguageId)
            ....
        </td>             
    </tr>
}

如果模型为IEnumerable<Usp_Sel_NotEnteredStringResources_Result>，则可以使用EditorTemplate(请参考[

Alternative if the model is IEnumerable<Usp_Sel_NotEnteredStringResources_Result>, you can use an EditorTemplate (refer [Post an HTML Table to ADO.NET DataTable for more details on how the name attributes must match your model property names, and the use of an EditorTemplate)

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