Question

我有一个正在构建的ASP.NET MVC应用程序，我无法弄清楚为什么回发的模型始终为空。

cshtml：

$("#list li a:not(li:nth-child(2) a)").removeClass("active");

我已经查看了表单，发布时所有字段的值都正确。仅当到达控制器时，它始终为null。有人可以帮我解决这个问题吗？

模型类：

<script src="https://code.jquery.com/jquery-3.3.1.min.js" integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8=" crossorigin="anonymous"></script>

<style>
  .active {
    color: red;
  }
</style>

<div id="list">
  <ul>
    <li><a class="active" href="#">One</a></li>
    <li><a class="active" href="#">Two</a></li>
    <li><a class="active" href="#">Three</a></li>
  </ul>
</div>

控制器：

<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
<div class="form-group">
    @Html.HiddenFor(model => model.TotalItemCategoryId, new { htmlAttributes = new { @class = "form-control" } })
</div>

<div class="form-group">
    @Html.LabelFor(model => model.Label, htmlAttributes: new { @class = "control-label col-md-2" })
    <div class="col-md-10">
        @Html.EditorFor(model => model.Label, new { htmlAttributes = new { @class = "form-control" } })
        @Html.ValidationMessageFor(model => model.Label, "", new { @class = "text-danger" })
    </div>
</div>

<div class="form-group">
    @Html.LabelFor(model => model.Value, htmlAttributes: new { @class = "control-label col-md-2" })
    <div class="col-md-10">
        @Html.EditorFor(model => model.Value, new { htmlAttributes = new { @class = "form-control" } })
        @Html.ValidationMessageFor(model => model.Value, "", new { @class = "text-danger" })
    </div>
</div>

<div class="form-group">
    @Html.HiddenFor(model => model.Quantity, new { htmlAttributes = new { @class = "form-control" } })
</div>

<div class="form-group">
    @Html.HiddenFor(model => model.QuoteId, new { htmlAttributes = new { @class = "form-control" } })
</div>

<div class="form-group">
    @Html.HiddenFor(model => model.TotalTemplateId, new { htmlAttributes = new { @class = "form-control" } })
</div>

<div class="form-group">
    @Html.HiddenFor(model => model.AllowDataEntry,new{@readonly="readonly"})
</div>

<div class="form-group">
    @Html.HiddenFor(model => model.IsMiscellaneous) 
</div>

Answer 1

它为null，因为您的模型包含名为value的属性，并且您还在POST方法中为模型value命名了参数。

您必须在QuoteId模型中添加TotalItemValue属性，然后将请求参数名称从value更改为model。

尝试一下：

public class TotalItemValue:IEntity
{
      ...
      public int QuoteId{ get; set; }
      ...
}


[HttpPost]
    public ActionResult CreateMiscellaneousItem(TotalItemValue model)
    {
       ...
       _expressionTotalService.SaveMiscellaneousItem(model);

       return RedirectToAction("Totals", new{model.QuoteId});
    }

查看

@using (Html.BeginForm()) 
{
    @Html.AntiForgeryToken()

    <div class="form-horizontal">
        <h4>TotalItemValue</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.TotalItemCategoryId, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.TotalItemCategoryId, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.TotalItemCategoryId, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Label, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Label, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Label, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Value, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Value, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Value, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.Quantity, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.Quantity, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.Quantity, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.QuoteId, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.QuoteId, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.QuoteId, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.TotalTemplateId, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.EditorFor(model => model.TotalTemplateId, new { htmlAttributes = new { @class = "form-control" } })
                @Html.ValidationMessageFor(model => model.TotalTemplateId, "", new { @class = "text-danger" })
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.AllowDataEntry, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                <div class="checkbox">
                    @Html.EditorFor(model => model.AllowDataEntry)
                    @Html.ValidationMessageFor(model => model.AllowDataEntry, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="form-group">
            @Html.LabelFor(model => model.IsMiscellaneous, htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                <div class="checkbox">
                    @Html.EditorFor(model => model.IsMiscellaneous)
                    @Html.ValidationMessageFor(model => model.IsMiscellaneous, "", new { @class = "text-danger" })
                </div>
            </div>
        </div>

        <div class="form-group">
            <div class="col-md-offset-2 col-md-10">
                <input type="submit" value="Create" class="btn btn-default" />
            </div>
        </div>
    </div>
}

ASP.NET MVC发布模型始终为null

1 个答案: