public IHttpActionResult DeleteItemById(long id)
 {
     if (id <= 0)
     {
         return(BadRequest());
     }
     itemBLL.DeleteItemById(id);
     return(Ok());
 }
 public PartialViewResult Delete(long id)
 {
     itemBLL.DeleteItemById(id);
     GetItems();
     return(PartialView("ItemListView"));
 }