Use Html.DropDownListFor to get a selected value - asp.net-mvc

Question

I am trying to use Html.DropDownListFor to build a dropdown list and get the user selected value. I can get the list to display but cannot figure out how to get the link to pass the selected value.
I have the following model:
public partial class ProductVariant
{
public int ID { get; set; }
public string Sku { get; set; }
}
The following ViewModel:
public class SkuToDiscountViewModel
{
public int ID { get; set; }
public string Sku { get; set; }
public IEnumerable<ProductVariant> Products { get; set; }
}
The following Controller action:
public ViewResult Index()
{
SkuToDiscountViewModel sModel = new SkuToDiscountViewModel();
List<ProductVariant> prodSkus = db.ProductVariants.ToList();
sModel.Products = prodSkus;
return View(sModel);
}
The following view:
#model mySpace.ViewModel.SkuToDiscountViewModel
#{
ViewBag.Title = "Index";
}
<h2>Index</h2>
#using(Html.BeginForm())
{
Html.DropDownListFor(x=>x.ID,
new SelectList(Model.Products,"ID", "Sku", Model.ID), " select ")
<p>
#Html.ActionLink("Edit", "Edit")
</p>
}
Any help is appreciated.

Answer 1

You need to a submit button to your form:
#model mySpace.ViewModel.SkuToDiscountViewModel
#{
ViewBag.Title = "Index";
}
<h2>Index</h2>
#using(Html.BeginForm())
{
Html.DropDownListFor(x=>x.ID,
new SelectList(Model.Products,"ID", "Sku", Model.ID), " select ")
<p>
<input type="submit" value="Save" />
</p>
}
Then you need to add an Action to your controller like this:
[HttpPost]
public ActionResult Index(SkuToDiscountViewModel postedModel)
{
// postedModel.ID will contain the value selected in the drop down list
}