//
        // GET: /PhieuNhap/
        public ActionResult Index(DateTime?TimeStart, DateTime?TimeEnd)
        {
            var data = new dbQLKhoEntities().PhieuNhaps.ToList();

            if (TimeStart.HasValue)
            {
                data = data.Where(q => q.ThoiGian.Value >= TimeStart.Value).ToList();
            }
            if (TimeEnd.HasValue)
            {
                data = data.Where(q => q.ThoiGian.Value <= TimeEnd.Value).ToList();
            }
            return(View(data));
        }