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Asked: 2026-05-11T00:18:10+00:00

I’m building a questionnaire mvc webapp, and i cant figure out how to pass

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I’m building a questionnaire mvc webapp, and i cant figure out how to pass an unknown number of arguments to the controller from the form.

My form is something like:

<% using (Html.BeginForm())    { %> <div id='Content'>     <% foreach (var group in ViewData.Model.QuestionGroups)        { %>     <div class='Group'>         <%=group.Description %>         <% foreach (var question in group.Questions)            {%>         <div class='Question'>             <div class='QuestionTitle'>                 <%=question.Title %>             </div>                 <%=Html.Hidden('Id', question.ID) %>             <div class='QuestionText'>                 <%switch (question.TypeAsEnum)                   {                       case QuestionTypeEnum.Text:%>                 <%=Html.TextBox('somename') %>                 <% break;                       case QuestionTypeEnum.Number:%>                 <%=Html.TextBox('somename') %>                 <% break;                       case QuestionTypeEnum.PhoneNumber:%>                 <%=Html.TextBox('somename')%>                 <% break;                       case QuestionTypeEnum.Email:%>                 <%=Html.TextBox('somename')%>                 <% break;                       case QuestionTypeEnum.Date:%>                 <%=Html.TextBox('somename')%>                 <% break;                       case QuestionTypeEnum.YesNo:%>                 <%=Html.RadioButton('somename', true)%>                 <%=Html.RadioButton('somename', false)%>                 <% break;                       case QuestionTypeEnum.Alternative:%>                 <%=Html.DropDownList('somename', question.Answers)%>                 <% break;                   }%>             </div>         </div>         <% } %>     </div>     <% } %> </div> <div id='submittButton'>     <%=Html.SubmitButton()%></div> <% } %>

Now what i need in my controller is List< ResponseAnswer >, where ResponseAnswer has the properties:

string questionID, string AnswerText, bool AnswerBool, number AnswerNumber, …

So how can i pass an unknown number of items containing questionID, AnswerType and Answer to the controller. In webforms i solved this by rendering the form with repeaters instead of foreach, and then iterating through the question repeater checking the control id, each repeater item containing a hidden questionid element and a input with id=AnswerType. But this will seriously break Separation of concern in mvc?

So is there any way of getting my controller to accept List< ResultAnswer > and somehow build this list without breaking soc, and if not, how do i pass the entire formresult back to the controller so i can do the iteration of the form data there instead of in the view.

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1 Answer

  1. Garry’s answer will work (and hence, up voted). However, you can model bind directly to a list, and I think it’s a bit more elegant. There are instructions in this blog post.

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