CSPosAPI.MainForm.buttonCreateBill_Click C# (CSharp) Метод

        private void buttonCreateBill_Click(object sender, EventArgs e)
        {
            var data = new BillData();
            data.posNo = textBoxPosNo.Text;
            data.amount = textBoxAmount.Text;
            data.vat = textBoxVat.Text;
            data.cashAmount = textBoxCash.Text;
            data.nonCashAmount = textBoxNonCash.Text;
            data.billIdSuffix = textBoxNumber.Text;

            var lstBillStock = new List<BillDetail>();

            foreach (DataGridViewRow row in dataGridViewStocks.Rows)
            {
                if (!row.IsNewRow)
                {
                    var stock = new BillDetail();
                    stock.code = row.Cells["Code"].Value.ToString();
                    stock.name = row.Cells["ItemName"].Value.ToString();
                    stock.measureUnit = row.Cells["MeasureUnit"].Value.ToString();
                    stock.qty = row.Cells["Qty"].Value.ToString();
                    stock.unitPrice = row.Cells["UnitPriceNonVat"].Value.ToString();
                    stock.totalAmount = row.Cells["Amount"].Value.ToString();
                    stock.vat = row.Cells["Vat"].Value.ToString();
                    stock.barCode = row.Cells["BarCode"].Value.ToString();
                    stock.cityTax = row.Cells["CityTax"].Value.ToString();
                    lstBillStock.Add(stock);
                }
            }
            data.cityTax = textBoxCityTax.Text;
            data.bankTransactions = this.ListBankTranscation;

            if (lstBillStock.Count == 0)
            {
                lstBillStock = null;
            }
            data.stocks = lstBillStock;

            data.districtCode = textBoxDistrict.Text;

            var json = new JavaScriptSerializer().Serialize(data);
            var result = Program.put(json);
            this.resultData = new JavaScriptSerializer().Deserialize<Result>(result);

            if ("True".Equals(this.resultData.success.ToString()))
            {
                print();
            }
            else { MessageBox.Show(resultData.message); }
        }