public ActionResult Index(string type, QianggouSelectModel request) { var model = QiangGouManager.SelectAllQiangGou(); model = model.Where(Q => Q.ActiveType == request.type && (request.aid == null || Q.ActivityID == request.aid.Value) && (string.IsNullOrWhiteSpace(request.aname) || Q.ActivityName.Contains(request.aname)) && (request.stime == null || request.stime.Value <= Q.StartDateTime) && (request.etime == null || request.etime.Value >= Q.EndDateTime)); ViewBag.Select = request; return(View(model)); }