asp.net-mvc – ASP.NET MVC 2 DropDownList无法渲染

Projects.Master

<div id="supaDiv" class="mainNav">
 <% Html.DropDownList("navigationList"); %>
</div>

MasterController.cs

namespace ProjectsPageMVC.Controllers.Abstracts
{
    public abstract class MasterController : Controller
    {
        public MasterController()
        {
          List<SelectListItem> naviList = new List<SelectListItem>();

          naviList.Add(new SelectListItem
          {
           Selected = true,Text = "AdvanceWeb",Value = "http://4168web/advanceweb/"
          });

          naviList.Add(new SelectListItem
          {
           Selected = false,Text = " :: AdvanceWeb Admin",Value = "http://4168web/advanceweb/admin/admindefault.aspx"
          });

          ViewData["navigationList"] = naviList;
        }
    }
}

DropDownList甚至没有出现在DOM中,我不知道我做错了什么.

ProjectsController

namespace ProjectsPageMVC.Controllers
{
    public class ProjectsController : MasterController
    {
        public ActionResult Index()
        {
            return View();
        }
    }
}