Source Code: Vb.net Billing Software

Designing tables for Products, Customers, Sales, and SalesDetails.

VB.NET allows developers to build user interfaces (UI) quickly using Windows Forms (WinForms) or Windows Presentation Foundation (WPF).

yPos += 10 e.Graphics.DrawLine(Pens.Black, leftMargin, yPos, 500, yPos) yPos += 10 e.Graphics.DrawString("Grand Total: " & lblGrandTotal.Text, titleFont, Brushes.Black, xPos, yPos) End Sub

This example will create a simple form with the following features: vb.net billing software source code

Private Sub ClearFields() txtProductCode.Clear() txtProductName.Clear() txtCategory.Clear() txtPrice.Clear() txtStock.Clear() txtGST.Clear() End Sub

startY += 10e.Graphics.DrawString("----------------------------------------------------------------", fontBody, Brushes.Black, startX, startY)

A reliable billing application requires a normalized relational database to maintain data integrity. For this system, we utilize three core tables: Products , Invoices , and InvoiceDetails . 1. Products Table ( Products ) Stores the master inventory records. ProductID (AutoNumber, Primary Key) ProductName (Short Text) Price (Currency) StockQuantity (Number) 2. Invoices Table ( Invoices ) Stores the parent record for every transaction. InvoiceID (AutoNumber, Primary Key) InvoiceDate (Date/Time) CustomerName (Short Text) GrandTotal (Currency) 3. Invoice Details Table ( InvoiceDetails ) For this system, we utilize three core tables:

Ensure you have Visual Studio installed on your computer. VB.NET is fully supported in Visual Studio.

: Use System.Data.SqlClient or System.Data.OleDb to connect to SQL Server or MS Access for saving invoices. 🖥️ Building the User Interface

Private Sub LoadCustomers() Try Dim query As String = "SELECT CustomerID, CustomerName FROM Customers" DBConnection.OpenConnection() Dim adapter As New SqlDataAdapter(query, DBConnection.conn) Dim dt As New DataTable() adapter.Fill(dt) cmbCustomer.DataSource = dt cmbCustomer.DisplayMember = "CustomerName" cmbCustomer.ValueMember = "CustomerID" DBConnection.CloseConnection() Catch ex As Exception MessageBox.Show("Error loading customers: " & ex.Message) End Try End Sub Initial Catalog= BillingSoftware

' Configure Preview Dialog boxDim previewDlg As New PrintPreviewDialog()previewDlg.Document = printDocpreviewDlg.ShowDialog()Catch ex As ExceptionMessageBox.Show("Printing Error: " & ex.Message, "Print Failure", MessageBoxButtons.OK, MessageBoxIcon.Warning)End TryEnd Sub

Public Sub GenerateInvoice() Dim connectionString As String = "Data Source=(local);Initial Catalog= BillingSoftware;Integrated Security=True" Dim connection As New SqlConnection(connectionString) connection.Open()

Create a Windows Form with a TextBox for a product barcode (or ID), a NumericUpDown for quantity, a DataGridView to show the cart items, and Labels for the running total.