/// <summary> /// 验证优惠劵编号 /// </summary> /// <returns></returns> public ActionResult VerifyCouponSN() { string couponSN = WebHelper.GetQueryString("couponSN");//优惠劵编号 if (couponSN.Length == 0) { return(AjaxResult("emptycouponsn", "请输入优惠劵编号")); } else if (couponSN.Length != 16) { return(AjaxResult("errorcouponsn", "优惠劵编号不正确")); } CouponInfo couponInfo = Coupons.GetCouponByCouponSN(couponSN); if (couponInfo == null)//不存在 { return(AjaxResult("noexist", "优惠劵不存在")); } else if (couponInfo.Oid > 0)//已使用 { return(AjaxResult("used", "优惠劵已使用")); } else if (couponInfo.Uid > 0)//已激活 { return(AjaxResult("activated", "优惠劵已激活")); } else//未激活 { return(AjaxResult("nonactivated", "优惠劵未激活")); } }