public ActionResult PosListProvide() { if (!base.HasPermission("Pos", PermissionOperate.manager)) { return(null); } Pos posDTO = new Pos() { }; TryUpdateModel <Pos>(posDTO); OceanDynamicList <object> list = _posService.GetPageDynamicList(PageIndex, PageSize, posDTO); if (list != null) { return(Content(list.ToJson(), "text/javascript")); } else { return(Content("{\"rows\":[],\"total\":0}", "text/javascript")); } }