Vbnet+billing+software+source+code Jun 2026

End Class

Private Sub btnAddProduct_Click(sender As Object, e As EventArgs) Handles btnAddProduct.Click ' Assume a popup product search form returns selected product Dim frm As New frmProductSearch() If frm.ShowDialog() = DialogResult.OK Then Dim newRow As DataRow = dtDetails.NewRow() newRow("ProductID") = frm.SelectedProductID newRow("ProductName") = frm.SelectedProductName newRow("Quantity") = 1 newRow("Rate") = frm.Rate ' Tax calculation will be done row-by-row based on GST% Dim gstPercent As Decimal = frm.GSTPercent Dim taxable As Decimal = newRow("Quantity") * newRow("Rate") newRow("TaxableValue") = taxable newRow("CGST") = Math.Round(taxable * (gstPercent / 100) / 2, 2) newRow("SGST") = Math.Round(taxable * (gstPercent / 100) / 2, 2) dtDetails.Rows.Add(newRow) CalculateTotals() End If End Sub vbnet+billing+software+source+code

To help you build a more specific version, what kind of billing software are you making (e.g., , Electricity , or Medical Store )? or Medical Store )?