To follow this guide, you should have the following installed: (2019 or later recommended) .NET Framework 4.7.2+ SQL Server Express or Microsoft Access (for the database)
This code snippet handles adding items to the DataGridView and calculating the subtotal. vb.net billing software source code
Create a class named dbConfig.vb to manage your database connection string globally. To follow this guide, you should have the
Creating your own billing software in VB.NET is a classic project for developers looking to master database management and CRUD (Create, Read, Update, Delete) operations. Using Visual Studio and SQL Server, you can build a robust system that handles everything from inventory to professional invoice generation. Using Visual Studio and SQL Server, you can
Imports System.Data.SqlClient Public Class dbConfig Public conn As New SqlConnection("Data Source=YOUR_SERVER;Initial Catalog=BillingDB;Integrated Security=True") Public Sub OpenConnection() If conn.State = ConnectionState.Closed Then conn.Open() End Sub Public Sub CloseConnection() If conn.State = ConnectionState.Open Then conn.Close() End Sub End Class Use code with caution. 4. Designing the Billing UI Your main form ( frmBilling.vb ) should include: Product ID, Quantity, Price, Customer Name. DataGridView: To display the current items in the cart. Buttons: "Add to Cart", "Generate Invoice", "Clear". 5. Core Logic: Adding Items to Grid