public ActionResult CategorySearch()
        {
            var vm = new CategoryPartialVM
            {
                Categories = new SelectList(_service.CategoryList(), "Id", "Name")
            };

            return PartialView("_CategoryListPartial", vm);
        }
 public ActionResult CategorySearchResults(CategoryPartialVM vm, int pageIndex = 0)
 {
     var userId = this.User.Identity.GetUserId();
     return View(_service.CategoryPages(userId, pageIndex, vm.Pin.CategoryId));
 }