model binding radio button list in Asp.net mvc

Question

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This is my code and i want the every question and selected radio button answer need to be save into database. While posting the data to the controller values become null.. Please suggest me..

If you have any solution please follow the test sample project link here:
dropbox.com/s/v33xcy3c2x72keo/TestQuestions.rar?dl=0

Please help me to resolve the solution
Thanks in Advance.

Model :

C#

public class Question
{
    public decimal TestId { get; set; }
    public decimal SkillId { get; set; }
    public decimal ID { get; set; }
    public string QuestionText { get; set; }
    public List<OptionList> Options { set; get; }        
}

public class OptionList
{
    public string Option1 { get; set; }
    public string Option2 { get; set; }
    public string Option3 { get; set; }
    public string Option4 { get; set; }
}

Controller :

C#

public ActionResult Successpage()
{
   decimal testid = 1;
   var items = (from p in db.ALBulkTestDetails
                where p.TestID == testid
                select new Question
                {
                    ID = p.QuestionID,
                    QuestionText = p.Question,
                    SelectedAnswer = null,
                    Options = (from a in db.ALBulkTestDetails
                               join b in db.ALBulkTestDetails
                               on new { aa = a.QuestionID, a.SkillID } equals new { aa = b.QuestionID, b.SkillID }
                              where b.QuestionID == p.QuestionID &amp;&amp; b.SkillID == p.SkillID
                               select new OptionList
                               {
                                   Option1 = b.Option1,
                                   Option2 = b.Option2,
                                   Option3 = b.Option3,
                                   Option4 = b.Option4
                               }).ToList()
                }).Take(3).ToList();
   return View(items);
}

Posted 27-Nov-15 0:52am

jagan12013

Updated 27-Nov-15 1:36am

Tomas Takac

v4

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Comments

Anil Sharma1983 27-Nov-15 7:07am

Please check radio button name posted values your form

jagan12013 27-Nov-15 7:14am

Tell me according model class and controller how to design in a view for posting submitted answers.

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Manas_Kumar · Answer 1 · 2015-11-27T04:33:00

Step1: Define Question and Option model

C#

public class Question
{
    public decimal TestId { get; set; }
    public decimal SkillId { get; set; }
    public decimal ID { get; set; }
    public string QuestionText { get; set; }
    public List<OptionList> Options { set; get; }
	public string SelectedAnswer { get; set; }	
}

public class OptionList
{
    public string Option1 { get; set; }
    public string Option2 { get; set; }
    public string Option3 { get; set; }
    public string Option4 { get; set; }
}

Step2: Design View page and add your viewmodel top of view page.

HTML

@model yourproject.model.Question; // Change as per your requirement
foreach (var temp in Model.Options)
{
	<div>
		@Html.RadioButtonFor(model => Model.SelectedAnswer, "1"})
		@Html.Label(temp.Option1)
	</div>
	<div>
		@Html.RadioButtonFor(model => Model.SelectedAnswer, "2")
		@Html.Label(temp.Option2)
	</div>
	<div>
		@Html.RadioButtonFor(model => Model.SelectedAnswer, "3")
		@Html.Label(temp.Option3)
	</div>
	<div>
		@Html.RadioButtonFor(model => Model.SelectedAnswer, "4")
		@Html.Label(temp.Option4)
	</div>
}

Step3: Add an action in Controller to get value

C#

[HttpPost]
public AcitonResult Index(Question qModel)
{
    if (ModelState.IsValid)
    {
        //TODO: Save your model and redirect 
	string temp = qModel.SelectedAnswer;
    }

    return View();
}