Best method to add values into dropdown in mvc4

hi,

First of all create create class which has IEnumerable type property.
public class test
{
    public IEnumerable data { get; set; }
    public string SelectedData { get; set; }
}

fill this in controller action method.

public ActionResult Index()
{
    ViewBag.Message = "Welcome to ASP.NET MVC!";
    test t = new test();
    var newData = new List();
    newData.Add(new SelectListItem { Text = "Yes", Value = "Y" });
    newData.Add(new SelectListItem { Text = "No", Value = "N" });
    t.data = newData;

    return View(t);
}

and used it on view

@{
    ViewBag.Title = "Home Page";
}

@model MvcApplication2.Controllers.test

@ViewBag.Message

hope this will help you.