Asp.net MVC Razor如何显示两个模型字段的分组单选按钮
本文关键字:字段 模型 两个 单选按钮 何显示 Razor net Asp 显示 MVC | 更新日期: 2023-09-27 18:25:42
我有一个简单的测验模型,我试图让用户在强类型视图中从两个单选按钮中选择正确答案/替代答案。但是我使用的lambda表达式不起作用。我有两个空白的收音机按钮。我在这里和网上看了几个问题,但我的模型是IList<>,我找不到合适的例子。我发现的所有示例都适用于非IList<>。
这是我的型号
型号:
public partial class Question
{
public int QuestionID { get; set; }
public string QuestionBody { get; set; }
public string CorrectAnswer { get; set; }
public string AlternativeAnswer { get; set; }
}
我的控制器
public ActionResult Index()
{
QuizSimpleEntities quizEntities = new QuizSimpleEntities();
var questions = from p in quizEntities.Questions
select p;
return View(questions.ToList());
}
我的型号:
@model IList<Quiz.Models.Question>
<h2>Welcome to the Quiz</h2>
@Html.BeginForm(method:FormMethod.Post,controllerName:"Home",actionName:"index")
{
@foreach (var questions in Model)
{
<p>@questions.QuestionBody</p>
@* How to display the CorrectAnswer and AlternativeAnswer
as two radio buttons grouped here? I will be posting the selected value back
}
}
感谢
您需要在视图模型上有一个属性,该属性将在发布表单时保存所选答案:
public partial class Question
{
public int QuestionID { get; set; }
public string QuestionBody { get; set; }
public string CorrectAnswer { get; set; }
public string AlternativeAnswer { get; set; }
public string SelectedAnswer { get; set; }
}
然后简单地循环浏览模型的元素并生成所需的标记:
@model IList<Quiz.Models.Question>
<h2>Welcome to the Quiz</h2>
@Html.BeginForm( method:FormMethod.Post, controllerName:"Home", actionName:"index")
{
@for (var i = 0; i < Model.Count; i++)
{
@Html.HiddenFor(x => x[i].QuestionID)
<fieldset>
<legend>
@Html.DisplayFor(x => x[i].QuestionBody)
</legend>
<ul>
<li>
@Html.HiddenFor(x => x[i].CorrectAnswer)
@Html.RadioButtonFor(x => x[i].SelectedAnswer, Model[i].CorrectAnswer)
@Html.DisplayFor(x => x[i].CorrectAnswer)
</li>
<li>
@Html.HiddenFor(x => x[i].AlternativeAnswer)
@Html.RadioButtonFor(x => x[i].SelectedAnswer, Model[i].AlternativeAnswer)
@Html.DisplayFor(x => x[i].AlternativeAnswer)
</li>
</ul>
</fieldset>
}
<button type="submit">OK</button>
}
注意:提交表单时,POST操作可以采用IList<Question>
模型,在该模型中,您将获得每个问题的答案(在SelectedAnswer
属性中)。