CREATE TABLE Products ( ProductID INT PRIMARY KEY IDENTITY, PName VARCHAR(100), Price DECIMAL(18, 2), Stock INT ); CREATE TABLE Invoices ( InvoiceID INT PRIMARY KEY IDENTITY, CustomerName VARCHAR(100), InvoiceDate DATE, TotalAmount DECIMAL(18, 2) ); Use code with caution. 3. Setting up the Connection (Connection Class)
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)
or Microsoft Reporting Services (for generating invoices) 2. Database Schema (SQL Server) vb.net billing software source code
Use libraries like iTextSharp to export the DataGridView content into a PDF invoice.
Before coding, you need a structured database. Create a database named BillingDB and execute these queries: CREATE TABLE Products ( ProductID INT PRIMARY KEY
Use a KeyDown event on the ProductID textbox to trigger a search when a barcode scanner enters a value.
Create a class named dbConfig.vb to manage your database connection string globally. Database Schema (SQL Server) Use libraries like iTextSharp
A secure login form to restrict access to the billing module. Conclusion
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.
Subtract the quantity sold from the Products table automatically after each sale.