Vb.net Billing Software Source Code Jun 2026

Private Sub CalculateTotal() Dim subTotal As Decimal = 0 For Each row As DataGridViewRow In dgvCart.Rows subTotal += Convert.ToDecimal(row.Cells("Total").Value) Next

Private Sub ResetForm() dtCart.Clear() GenerateInvoiceNumber() UpdateGrandTotal() ClearProductFields() cmbCustomer.SelectedIndex = -1 cmbPaymentMethod.SelectedIndex = -1 End Sub vb.net billing software source code