public IActionResult AddHolderToBlock(int holderId, int blockId) { try { _dbHelper.AddHolderToBlock(holderId, blockId); TempData["Success"] = true; } catch { TempData["ErrorMessage"] = _localizer["The container could not be assigned to the text block."]; } bool isAjaxCall = Request.Headers["x-requested-with"] == "XMLHttpRequest"; if (isAjaxCall) { return(PartialView("AddedAndLooseHoldersPartialView", GetBlockManagementModel(blockId))); } else { return(RedirectToAction("EditBlock", new { blockId = blockId })); } }