public ActionResult DeleteSelected(ICollection <int> selectedIds) { if (!_permissionService.Authorize("ManageSlider")) { return(AccessDeniedView()); } if (selectedIds != null) { _sliderService.DeleteSliders(_sliderService.GetSliderByIds(selectedIds.ToArray()).ToList()); } SuccessNotification("Sliders deleted successfully."); return(RedirectToAction("List")); }