private void SetSaleText(string payment_method) //db에서 할인율 불러와서 계산해야함 { StatisticsModel result = StatisticsVM.GetStatistics(payment_method); WholeSalePrice = result.OriginalPrice; PureSalePrice = result.PureSalePrice; SalePrice = result.SalePrice; DataContext = null; DataContext = this; }