How to pass selected radiobutton values from View to Control

Question

Developing Exam Software in MVC 5. I am Completely new to MVC. I want to Compare selected Answers by student with Correct Options available in database. but When i click on Submit button it show null reference Exception. i think the selected answer are not passed to controller. Please Help me Out. Thanx in Advance. (Radio button value are taken from database.)

Mayank · Answer

public class Questions { public string Question { get; set; } public string Answer { get; set; } public string Option1{ get; set; } public string Option2 { get; set; } public string Option3 { get; set; } public string Option4 { get; set; } } public ActionResult GetQuestions() { List students = new List (); var user = new Questions { Question=Question1 Option1 = A Option2 = B Option3 = C Option4 = D }; var user2 = new Questions { Question = Question2 Option1 = A Option2 = B Option3 = C Option4 = D }; var user3 = new Questions { Question = Question3 Option1 = A Option2 = B Option3 = C Option4 = D }; students.Add(user); students.Add(user2); students.Add(user3); return View(students); } [HttpPost] public ActionResult GetQuestions(List modelFormCollection test) { return View(); } @model IEnumerable @{ ViewBag.Title = GetQuestions; } GetQuestions @using (Html.BeginForm(GetQuestions Home FormMethod.Post)) { if (Model != null) { for (int i = 0; i { @Model.ElementAt(i).Question @Model.ElementAt(i).Option1 @Model.ElementAt(i).Option2 @Model.ElementAt(i).Option3 @Model.ElementAt(i).Option4 } } } If it resolve your query please mark as answer.

ravi verma · Answer

Add a property in model with name answer (public string answer {get; set;}). From value pass using control name. so you'll get value into this property when you'll submit from.