public async Task <IActionResult> ExportXlsx() { try { var bytes = _exportManager.ExportCollectionsToXlsx(await _collectionService.GetAllCollections(showHidden: true, storeId: _workContext.CurrentCustomer.StaffStoreId)); return(File(bytes, "text/xls", "collections.xlsx")); } catch (Exception exc) { Error(exc); return(RedirectToAction("List")); } }