in my view controller, especially in Index method, i've implememnted few lines of code, see below:
ViewBag.SearchType = (new List<SelectListItem>(){ new SelectListItem(){ Text="Time to start", Value="0", Selected=true},
new SelectListItem(){ Text="Highest prize value", Value="1"}}).AsEnumerable();
and in View i've made such improvements:
@using (Html.BeginForm("Index", "PrePurchase", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
@Html.DropDownList("SearchType");
<input type="submit" value="View" />
}
Maybe this is not polite way , but it helps me , and my view started work properly in conjunction with controller.