Vb.net Billing Software Source Code < SAFE - TUTORIAL >

Developing a billing system is one of the most common projects for VB.NET developers, and with good reason—it's the perfect way to master database integration, user interface design, and business logic implementation.

Open-source example repos to study (use these as templates)

A comprehensive solution with front-end VB.NET and back-end MS SQL Server 2008 r2. This system includes master entries for company info, categories, customers, suppliers, products, and services management. Additional features include expense vouchers, quotations management, SMS sending via HTTP API, user registration, and complete accounting reports including profit/loss statements, trial balance, stock IN/OUT tracking, and database backup/restore functionality.

Creating professional, printable invoices and business reports is a critical feature of any billing system. In the VB.NET ecosystem, has been the industry-standard tool for this purpose for many years. It is deeply integrated with Visual Studio, allowing developers to create highly customized reports by dragging and dropping fields onto a designer surface. vb.net billing software source code

Furthermore, integrating reporting tools is vital. Developers often use libraries like Crystal Reports or Microsoft Report Viewer within the VB.NET environment to generate professional, printable PDF invoices. Implementation Steps

Private Sub PrintBill(invoiceNo As Integer) Dim printDoc As New Printing.PrintDocument() AddHandler printDoc.PrintPage, Sub(sender, e) Dim yPos As Single = 50 Dim font As New Font("Courier New", 10) e.Graphics.DrawString("ABC STORES - GST BILL", New Font(font, FontStyle.Bold), Brushes.Black, 100, yPos) yPos += 30 e.Graphics.DrawString($"Invoice #: invoiceNo Date: Date.Now", font, Brushes.Black, 50, yPos) yPos += 30 ' ... loop through DataGridView and print each line ... End Sub printDoc.Print() End Sub

For generating weekly or monthly sales summaries, account ledgers, and tax reports, Crystal Reports is a classic and powerful tool for the .NET framework. You can embed a Crystal Reports Viewer control directly into your Windows Form to display the report and then provide options for printing or exporting it to common formats like PDF or Excel. This provides an enterprise-grade reporting solution for your application . Developing a billing system is one of the

This codebase provides a highly scalable foundation for desktop retail solutions. You can easily expand it with customized business rules, taxes, discounts, and visual dashboards tailored to your specific operations.

A complete desktop billing solution developed using Visual Studio 2013 with VB.NET, connected to MS Access via OLEDB. This project includes user authentication and allows the store owner to create new bills, view old bills, manage grocery stock, and add new items to inventory data—all key operations for retail management.

An automated system for managing water bill payments, built in Visual Basic 2008 with MS Access database. It manages transactions including invoice creation, bill payments, customer tracking with due date monitoring, and automatic penalty calculation for late payments. The system can also trace customer accounts for previous unpaid months. It is deeply integrated with Visual Studio, allowing

Products : Stores inventory items, stock levels, and pricing.

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Public Class clsBillingEngine Public Function CalculateLineTotal(quantity As Integer, price As Decimal, gstPercent As Decimal) As Decimal Dim subtotal = quantity * price Dim gstAmount = subtotal * (gstPercent / 100) Return subtotal + gstAmount End Function Public Function CalculateInvoiceTotal(dt As DataTable) As Dictionary(Of String, Decimal) Dim subTotal As Decimal = 0 Dim totalGST As Decimal = 0 For Each row As DataRow In dt.Rows Dim qty = Convert.ToDecimal(row("Quantity")) Dim price = Convert.ToDecimal(row("Price")) Dim gst = Convert.ToDecimal(row("GST_Percent")) Dim lineSub = qty * price subTotal += lineSub totalGST += lineSub * (gst / 100) Next Dim result As New Dictionary(Of String, Decimal) result.Add("SubTotal", subTotal) result.Add("TotalGST", totalGST) result.Add("GrandTotal", subTotal + totalGST) Return result End Function