public RedirectToRouteResult CancelZP(string itemId, decimal num, string conractId)
        {
            // 撤批
            try
            {
                bll.CancelZpInfo(itemId, num);
            }
            catch (Exception ex)
            {
                ViewBag.ErrorMsg = ex.Message;
            }

            if (ViewBag.ErrorMsg != null)
            {
                return(RedirectToAction(nameof(ZPManager), new { id = conractId, errorMsg = ViewBag.ErrorMsg }));
            }

            CloseDialogAndRefreshParentPage();
            return(null);
        }