public string GetVisitStatus(int id)
        {
            VisitPeriodModel vm = new VisitPeriodModel();

            vm = ShopDetails.GetVisitPeriod(id);

            if (vm != null)
            {
                return(CommonLib.Helper.JsonSerializeObject(ShopDetails.GetVisitPeriod(id), "yyyy-MM-dd HH:mm:ss"));
            }
            else
            {
                return("");
            }
        }