Create a new in Visual Studio and name your form MainBillingForm . Design the interface with the following standard controls: Customer Details Section: TextBox named txtCustomerName Product Selection Section: ComboBox named cmbProducts (To load available items) TextBox named txtQuantity (To input sales volume) TextBox named txtPrice (Read-only, displays item price) Button named btnAddToGrid (Text: "Add Item") Transaction Grid: DataGridView named dgvItems
Public Class Product Public Property Name As String Public Property Price As Decimal
Try ' Calculate totals Dim subtotal As Decimal = 0 Dim totalGST As Decimal = 0 For Each row As DataRow In dtCart.Rows subtotal += CDec(row("Total")) Next
Public Class frmProducts Private Sub frmProducts_Load(sender As Object, e As EventArgs) Handles MyBase.Load LoadProducts() End Sub Private Sub LoadProducts() Try Dim dt As DataTable = Product.GetAllProducts() dgvProducts.DataSource = dt dgvProducts.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill Catch ex As Exception MessageBox.Show("Error loading products: " & ex.Message) End Try End Sub vb.net billing software source code
InvoiceDetails (Invoice ID, Item ID, Quantity, Price, Discount) 2. The Data Access Layer (DAL)
Let’s be honest: in the world of programming, VB.NET (Visual Basic .NET) rarely gets the spotlight. It’s overshadowed by Python, JavaScript, and C#. However, there is a reason it remains a titan in the enterprise and small-business software space.
' Commit all updates sequentially if executions completed without exceptionstransaction.Commit()ActiveInvoiceID = invoiceIDMsgBox("Invoice Saved Successfully! Serial Tracking ID: " & invoiceID, MsgBoxStyle.Information, "Success") Create a new in Visual Studio and name
If you would like to expand this system further,g., generating daily or monthly sales reports)
An automated billing system is the backbone of modern retail and corporate operations. Developing a robust billing solution requires a solid understanding of database management, user interface design, and transactional logic.
UpdateGrandTotal() ClearProductFields() End Sub It’s overshadowed by Python, JavaScript, and C#
When evaluating these projects, consider the following:
-- Invoice Header CREATE TABLE tbl_Invoice ( InvoiceNo INT PRIMARY KEY IDENTITY(1,1), InvoiceDate DATETIME DEFAULT GETDATE(), CustomerID INT FOREIGN KEY REFERENCES tbl_Customer(CustomerID), SubTotal DECIMAL(18,2), GST_Amount DECIMAL(18,2), GrandTotal DECIMAL(18,2), PaymentMode NVARCHAR(20) -- Cash/Card/UPI );
Catch ex As Exceptiontransaction.Rollback()MsgBox("Critical error encountered during processing database engine pipeline: " & ex.Message, MsgBoxStyle.Critical, "Transaction Failure")End TryEnd UsingEnd Sub
Most VB.NET billing systems use or MS Access for data storage. Use the following logic to connect your application to a SQL database: