Creating a clean, printable layout (often using Crystal Reports or RDLC).
Private Sub cmbProductName_SelectedIndexChanged(sender As Object, e As EventArgs) Handles cmbProductName.SelectedIndexChanged If cmbProductName.SelectedValue IsNot Nothing Then Try Dim productID As Integer = Convert.ToInt32(cmbProductName.SelectedValue) Dim query As String = "SELECT ProductCode, UnitPrice, GSTPercentage FROM Products WHERE ProductID = @ProductID" DBConnection.OpenConnection() Using cmd As New SqlCommand(query, DBConnection.conn) cmd.Parameters.AddWithValue("@ProductID", productID) Using reader As SqlDataReader = cmd.ExecuteReader() If reader.Read() Then txtProductCode.Text = reader("ProductCode").ToString() txtPrice.Text = reader("UnitPrice").ToString() txtGST.Text = reader("GSTPercentage").ToString() txtQuantity.Text = "1" CalculateTotal() End If End Using End Using DBConnection.CloseConnection() Catch ex As Exception MessageBox.Show("Error: " & ex.Message) End Try End If End Sub
Some of the key components of the source code include:
End Class
When the "Finish" button is clicked, the software must loop through the grid and save each line item to the InvoiceItems table while updating the Products table to reduce stock. 5. Why VB.NET for Billing? vb.net billing software source code
The climax of any billing story is the moment the printer whirs to life. For years, developers used Crystal Reports
: Handles personal details like ID, name, address, and contact information. Inventory & Product Module
: Textboxes for ProductCode , ProductName , Price , and Quantity . Include an "Add to Cart" button.
The VB.NET billing software uses a database to store data, including customer information, invoices, payments, and products. The database design consists of several tables, including: Creating a clean, printable layout (often using Crystal
To display the items currently being added to the bill. Calculation Panel: Labels for Total, Tax, and Grand Total.
' Constructor and ToString methods included for object handling Use code with caution. Copied to clipboard Source: Adapted from Example: Calculating Line Totals selections and inputs, this method calculates line totals in real-time. Private Sub UpdateLineTotal()
A robust billing system must handle multiple, distinct tasks. When looking at or creating source code, these are the essential modules to include: A. Customer Management Module
Developing a robust billing and invoicing system is a foundational requirement for many enterprise applications. Visual Basic .NET (VB.NET), paired with the Windows Forms (WinForms) framework and an SQL Server backend, remains a highly reliable stack for creating desktop-based point-of-sale (POS) and billing systems. This guide provides a comprehensive overview of the architecture, database design, and actual source code required to build a functional VB.NET billing software. 1. System Architecture and Database Design Why VB
' Timer for real-time clock Timer1.Start() End Sub
: Ability to store products, categories, and stock levels.
Private Sub FormatDataGridView() dgvCart.Columns("ProductID").Visible = False dgvCart.Columns("ProductCode").HeaderText = "Product Code" dgvCart.Columns("ProductName").HeaderText = "Product Name" dgvCart.Columns("Quantity").HeaderText = "Qty" dgvCart.Columns("UnitPrice").HeaderText = "Unit Price" dgvCart.Columns("GST").HeaderText = "GST %" dgvCart.Columns("Total").HeaderText = "Total" dgvCart.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill End Sub
This code defines an Invoice class that represents an invoice and provides a GenerateInvoice method for generating an invoice.
VB.NET, despite being an older language, remains a robust choice for desktop-based billing software, especially for small to medium-sized retail stores, restaurants, or service centers. Its strengths lie in:
: Restrict standard cashiers from modifying sales history or modifying active product price data via encrypted admin authorization login forms. If you need help expanding this setup, tell me: