private void button2_Click(object sender, EventArgs e) { var amount = numAmount.Value; var shenase = txtُShenase.Text; var receipt = txtReceipt.Text; var bank = comboBox1.Text; //string cmd = string.Format("INSERT INTO Receipt(Shenase,Amount,ReceiptDate)VALUES('{0}','{1}','{2}')", shenase, amount, receipt); string cmd = Helper.PardakhtCommand(1, shenase, amount.ToString(), bank, receipt); string result = InsertData.Payment(cmd); MessageBox.Show(result); }