假设你的 ViewModel 是这样的
public class Question
{
public int ID { set; get; }
public string QuestionText { set; get; }
public List<Answer> Answers { set; get; }
public int SelectedAnswer { set; get; }
public Question()
{
Answers = new List<Answer>();
}
}
public class Answer
{
public int ID { set; get; }
public string AnswerText { set; get; }
}
public class Evaluation
{
public List<Question> Questions { set; get; }
public Evaluation()
{
Questions = new List<Question>();
}
}
在 GET 操作方法中,您将把视图模型返回到视图,并填写一些问题和答案。在下面的代码中,我对问题和答案进行了硬编码。您可以从存储库/服务层获取它。
public ActionResult Index()
{
var evalVM = new Evaluation();
//the below is hardcoded for DEMO. you may get the data from some
//other place and set the questions and answers
var q1=new Question { ID=1, QuestionText="What is your favourite language"};
q1.Answers.Add(new Answer{ ID=12, AnswerText="PHP"});
q1.Answers.Add(new Answer{ ID=13, AnswerText="ASP.NET"});
q1.Answers.Add(new Answer { ID = 14, AnswerText = "Java" });
evalVM.Questions.Add(q1);
var q2=new Question { ID=2, QuestionText="What is your favourite DB"};
q2.Answers.Add(new Answer{ ID=16, AnswerText="SQL Server"});
q2.Answers.Add(new Answer{ ID=17, AnswerText="MySQL"});
q2.Answers.Add(new Answer { ID=18, AnswerText = "Oracle" });
evalVM.Questions.Add(q2);
return View(evalVM);
}
Now we will create an Editor Template to render our Question. so go to your View Folder and create a folder called EditorTemplates under the folder with your current controller name.
Add a view to the EditorTemplates folder and give the same name as the class name we want to represent. ie : Question.cshtml
![enter image description here](https://i.stack.imgur.com/XOdfG.png)
现在将此代码放入编辑器模板中
@model YourNameSpace.Question
<div>
@Html.HiddenFor(x=>x.ID)
@Model.QuestionText
@foreach (var a in Model.Answers)
{
<p>
@Html.RadioButtonFor(b=>b.SelectedAnswer,a.ID) @a.AnswerText
</p>
}
</div>
现在转到我们的主视图并使用 EditorTemplate html 帮助器方法将我们创建的 EditorTemplate 带到主视图。
@model YourNameSpace.Evaluation
<h2>Index</h2>
@using (Html.BeginForm())
{
@Html.EditorFor(x=>x.Questions)
<input type="submit" />
}
现在,在 HttpPost 中,您可以检查发布的模型并获取所选单选按钮 (SelectedAnswer) 的值
[HttpPost]
public ActionResult Index(Evaluation model)
{
if (ModelState.IsValid)
{
foreach (var q in model.Questions)
{
var qId = q.ID;
var selectedAnswer = q.SelectedAnswer;
//Save
}
return RedirectToAction("ThankYou"); //PRG Pattern
}
//reload questions
return View(model);
}
If you use visual studio breakpoints, you can see the values posted. Thanks to MVC Model binding :)
![enter image description here](https://i.stack.imgur.com/YBeMQ.png)
您可以阅读相关内容并下载工作示例here http://www.techiesweb.net/radio-button-list-in-asp-net-mvc.