读操作隐藏字段的值？ [英] reading hidden field value in action?

问题描述

在MVC-4剃须刀认为我有2列的HTML表。第一列显示的字段，并把它存储为一个隐藏字段。表中的第2列有一个＆LT; A＆GT; 点击它重定向到其他一些控制和行动

IN MVC-4 Razor view I have a html table with 2 columns. 1st columns shows a field and also stores it as a hidden field. 2nd column of table has a <a> clicking on it it redirect to some other control and action.

<tbody>
    @foreach (var row in Model.Conversions)
    {
     <tr>
    <td>@(Html.DisplayFor(m => row.LastUpdatedDate))
         @(Html.Hidden("DateFrom",@row .LastUpdatedDate))
    </td>
    <td><a href="@Url.Action("ExchangeRateDetails", "ExchangeRate", new { currencyCode = @row.CurrencyCodeFromTo })">+</a>
    </td>
    </tr>
    }
</tbody>

里面的动作，我想读的隐藏字段的值，但它为空。这是我的code：

Inside action I am trying to read hidden field value but it is null. Here is my code:

public virtual ActionResult ExchangeRateDetails(string currencyCode)
        {

            var dat = Request.Form["DateFrom"];

}

问题：

我发现隐藏字段值为空。我的期望是它应有的价值未来的形式隐藏字段。我无法通过这个值作为查询字符串。能否请你指导和帮助我怎样才能在行动中读取隐藏字段的值？

I am finding hidden field value as null. My expectation is it should have value coming form hidden field. I cant pass this value as a query string. Can you please guide and help me how I can read hidden field values in action ?

许多感谢您的指导和帮助我。

Much thanks for your guidance and helping me.

感谢

推荐答案

使用的FormCollection

Use FormCollection

[HttpPost]
public virtual ActionResult ExchangeRateDetails(FormCollection collection,string currencyCode)
{
     string value = Convert.ToString(collection["DateFrom"]);
     ...
     return View();
}   

和你为什么使用@（当时hidenfield？请改变，像，删除（）中的前html.hidden

and Why you used @( then hidenfield ? please change that like , remove '()' in before html.hidden

 @Html.Hidden("DateFrom",@row .LastUpdatedDate)

修改

和添加的的形式=邮报的在你的锚标记

And Add form="Post" in your anchor tag

喜欢

<a href="@Url.Action("ExchangeRateDetails", "ExchangeRate", new { currencyCode = @row.CurrencyCodeFromTo **,form="post"**})">+</a>

它的工作对我来说。如果您通过上面的编辑code。在你的锚标记添加的形式=邮报，然后你不需要任何其他的变化，你的code一直在努力与这个小变化

It's working to me . If you add form="Post" in your anchor tag by the above edited code , Then you don't need any other changes ,Your code always working with on this small change .

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