Testing & deployment
: A DataGridView is often used to show the current "cart" or bill before finalization. vb.net billing software source code
Public Class Invoice Private invoiceID As Integer Private customerID As Integer Private invoiceDate As Date Private totalAmount As Decimal Testing & deployment : A DataGridView is often
' Update stock Dim cmdStock As New SqlCommand("UPDATE tbl_Product SET StockQuantity = StockQuantity - @qty WHERE ProductID = @pid", con, transaction) cmdStock.Parameters.AddWithValue("@qty", row.Cells("Quantity").Value) cmdStock.Parameters.AddWithValue("@pid", row.Cells("ProductID").Value) cmdStock.ExecuteNonQuery() Next vb.net billing software source code
Open-source example repos to study (use these as templates)
Once you have the base , consider these enhancements:
: This project includes a detailed synopsis and documentation. It is specifically designed for hospitality, covering order management and final bill generation.