Question

我在CSHTML中创建了一个表，我想将nr个项目== aantal的数组传递回我的控制器，但这似乎不起作用。任何想法是错的或为什么我在我的控制器中得到一个空引用？

CSHTML

@using (Html.BeginForm("OrderConfirm", "Beurs", new { vm = Model.Aantal }, method: FormMethod.Post))
    {
<table class="table table-striped table-condensed table-bordered">
    <tr>
        <th>
            Naam
        </th>
        <th>
            Prijs
        </th>
        <th>
            Minimum prijs
        </th>
        <th>
            Factor
        </th>
        <th> Actie</th>
        <!--
        <th>Edit</th>-->
    </tr>


        @foreach (var item in Model.ItemLijstVm)
        {
            <tr>
                <td>
                    @Html.DisplayFor(modelItem => item.Naam)
                </td>
                <td>
                    € @Html.DisplayFor(modelItem => item.Prijs)
                </td>
                <td>
                    € @Html.DisplayFor(modelItem => item.MinimumPrijs)
                </td>
                <td>
                    @Html.DisplayFor(modelItem => item.Factor)
                </td>
                <td>

                        @Html.TextBoxFor(m => m.Aantal[item.Id - 1], new {type = "number" })

                </td>   
            </tr>
        }

</table>
 <input type="submit" value=" Bevestig bestelling " width="120" />
}

视图模型

public class BeursLijstViewModel
{
public IEnumerable<BeursItemViewModel> ItemLijstVm{get; set;}

public string Naam { get; set; }

public double Crash { get; set; }

//References naar animated gif
public bool  Event { get; set; }
public string GifPath { get; set; }


public int[] Aantal { get; set; }

public int VerhoogAllePrijzen { get; set; }

public double Totaal { get; set; }

public SelectListItem Categorie { get; set; }

public BeursLijstViewModel(Beurs beurs)
{

    ItemLijstVm= beurs.Items.Select(g => new BeursItemViewModel(g));
    Naam = beurs.Naam;
    Aantal = new int[beurs.Items.Count()];
    Totaal = beurs.Totaal;
}



}

控制器

[HttpPost]
        public ActionResult OrderConfirm(int[] vm) //VM is null but should be array
        {
           //Some more code



        }

我从模型中获取的帖子的引用为null，但如果我在我的foreach循环中声明它，它就可以了。我真的不知道出了什么问题：

 @using (Html.BeginForm("Add", "Beurs", new { id = item.Id, aantal = Model.Aantal }, method: FormMethod.Post))
                    {
                        @Html.TextBoxFor(m => m.Aantal[item.Id - 1], new { type = "number" })
                        <input type="submit" value=" + " width="120"/>
                    }

Answer 1

我认为你必须传回实际的模型，而不仅仅是希望获得结果的数组，因为当它绑定它时会有几个层，例如name =＆＃39; Model.item [z]＆＃39;

{{1}}

Answer 2

@using (Html.BeginForm("OrderConfirm", "Beurs", new { vm = Model.Aantal }, method: FormMethod.Post))

changing the above part in combination with the answer of @COLD TOLD to

@using (Html.BeginForm("OrderConfirm", "Beurs"))

fixed my problem. Thanks for the help!

如何将表/数组的多个值传递给控制器

2 个答案: