i have this create method, which return list id and name and i pass it to view bag

public ActionResult Create()
{
    IList<FirstCategories> objcate = new List<FirstCategories>();
    objcate = cat.allcatlistbl();
    SelectList list = new SelectList(objcate, "ID", "Name");
    ViewBag.DropDownList = list;
    return View();
}

on my view i call it like

@Html.DropDownList("DropDownList", ViewBag.DropDownList as SelectList, "Please Select Category");

but drop down list on my view is alway come blank not fill with data please advice