public IActionResult delete(long gallery_image_id)
 {
     try
     {
         _galleryImageService.delete(gallery_image_id);
         AlertHelper.setMessage(this, "Gallery image deleted successfully.", messageType.success);
     }
     catch (Exception ex)
     {
         AlertHelper.setMessage(this, ex.Message, messageType.error);
     }
     return(RedirectToAction(nameof(Index)));
 }