Question

我有这种方法用于过程＆＃34;创建＆＃34; asp.net中的表单：

public ActionResult Create([Bind(Include = "question_id, feedback_id")] feedback_questions feedback_questions)

在表单question_id中，我从选择框中获取，但feedback_id我希望隐藏价值。

我的表格：

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

    <div class="form-horizontal">
        <h4>feedback_questions</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.question_id, "choose question: ", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.DropDownList("question_id", null, htmlAttributes: new { @class = "form-control" })
                @Html.ValidationMessageFor(model => model.question_id, "", new { @class = "text-danger" })
            </div>
        </div>
        <div class="form-group">
            @Html.LabelFor(model => model.feedback_id, "", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                // here I want hidden attribute for feedback_id, which will have value @ViewBag.feedback_id
                @Html.ValidationMessageFor(model => model.question_id, "", new { @class = "text-danger" })
            </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>
}

我该怎么做？

Answer 1

可能feedback_id正在从另一个视图或布局传递给视图，但由于它在您的模型上，为什么不将其传递到Get操作的Create视图

public ActionResult Create()
{
    return View(new feedback_questions() { feedback_id = ?? });
}

[HttpPost]
public ActionResult Create([Bind(Include = "question_id, feedback_id")] feedback_questions feedback_questions)
{ 
    return View(feedback_questions);      
}

然后你可以使用HiddenFor帮助

@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()
    @Html.HiddenFor(model => model.feedback_id)
    <div class="form-horizontal">
        <h4>feedback_questions</h4>
        <hr />
        @Html.ValidationSummary(true, "", new { @class = "text-danger" })
        <div class="form-group">
            @Html.LabelFor(model => model.question_id, "choose question: ", htmlAttributes: new { @class = "control-label col-md-2" })
            <div class="col-md-10">
                @Html.DropDownList("question_id", null, htmlAttributes: new { @class = "form-control" })
                @Html.ValidationMessageFor(model => model.question_id, "", new { @class = "text-danger" })
            </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>
}

Answer 2

您可以使用Html.Hidden("feedback_id", @ViewBag.feedback_id)其中feedback_id是隐藏输入的名称，该名称应与您要绑定的属性的名称相匹配。

如何在create方法中处理隐藏值

2 个答案: