Vb.net Billing Software Source Code |link| -

I'll provide you with a comprehensive guide and source code for a basic billing software system in VB.NET with SQL Server database.

End Sub

4. Product Class (Product.vb)

Public Class Product
    Public Property ProductID As Integer
    Public Property ProductCode As String
    Public Property ProductName As String
    Public Property Category As String
    Public Property UnitPrice As Decimal
    Public Property StockQuantity As Integer
    Public Property GSTPercentage As Decimal
Public Function AddProduct() As Boolean
    Try
        Dim query As String = "INSERT INTO Products (ProductCode, ProductName, Category, UnitPrice, StockQuantity, GSTPercentage) VALUES (@Code, @Name, @Category, @Price, @Stock, @GST)"
        DBConnection.OpenConnection()
        Using cmd As New SqlCommand(query, DBConnection.conn)
            cmd.Parameters.AddWithValue("@Code", ProductCode)
            cmd.Parameters.AddWithValue("@Name", ProductName)
            cmd.Parameters.AddWithValue("@Category", Category)
            cmd.Parameters.AddWithValue("@Price", UnitPrice)
            cmd.Parameters.AddWithValue("@Stock", StockQuantity)
            cmd.Parameters.AddWithValue("@GST", GSTPercentage)
            Return cmd.ExecuteNonQuery() > 0
        End Using
    Catch ex As Exception
        MessageBox.Show("Error: " & ex.Message)
        Return False
    Finally
        DBConnection.CloseConnection()
    End Try
End Function

"VB.NET billing system" (filter by language: Visual Basic .NET)
"WinForms invoice generator" (often written in VB.NET)
"GST billing software VB.NET with source code"

Conclusion
The "vb.net billing software source code" is not just a collection of files; it is a blueprint for understanding transactional systems, database integrity, and UI/UX in desktop applications. By mastering the code patterns shown above—database transactions, DataGridView cart management, and dynamic printing—you can build a billing system that rivals commercial products. vb.net billing software source code
Private Sub CalculateTotals()
    Dim subtotal As Decimal = 0
    Dim totalTax As Decimal = 0
    Dim discountAmt As Decimal = 0
    Dim grandTotal As Decimal = 0
For Each row As DataGridViewRow In dgvBill.Rows
    If row.IsNewRow Then Continue For
    Dim amount As Decimal = Convert.ToDecimal(row.Cells("Amount").Value)
    subtotal += amount
In conclusion, VB.NET remains a popular choice for desktop-based billing software due to its rapid application development (RAD) capabilities and deep integration with the Windows ecosystem. While modern businesses are shifting toward web-based SaaS models, the foundational logic found in VB.NET billing source code provides a robust blueprint for understanding automated financial management. Selecting and Setting up Billing System Software | Maxio I'll provide you with a comprehensive guide and