Vbnet+billing+software+source+code

The UI is built using Windows Forms.

' Example: Calculating total on DataGridView Cell End Edit
Private Sub dgvCart_CellEndEdit(sender As Object, e As DataGridViewCellEventArgs) Handles dgvCart.CellEndEdit
    If e.ColumnIndex = dgvCart.Columns("Quantity").Index Then
        Dim qty As Integer = CInt(dgvCart.Rows(e.RowIndex).Cells("Quantity").Value)
        Dim price As Decimal = CDec(dgvCart.Rows(e.RowIndex).Cells("Price").Value)
' Calculate Line Total
        dgvCart.Rows(e.RowIndex).Cells("LineTotal").Value = qty * price
' Update Grand Total Label
        CalculateGrandTotal()
    End If
End Sub
Private Sub CalculateGrandTotal()
    Dim total As Decimal = 0
    For Each row As DataGridViewRow In dgvCart.Rows
        total += CDec(row.Cells("LineTotal").Value)
    Next
    lblGrandTotal.Text = total.ToString("C2") ' Format as Currency
End Sub

Billing software lives and dies by its reports. The source code should include an implementation of:

The following code demonstrates the transaction process—inserting the invoice header and items, and updating stock atomically.

Imports System.Data.SqlClient
Public Class InvoiceService
    Private dbHelper As New DatabaseHelper()
Public Function CreateInvoice(customerId As Integer, items As List(Of InvoiceItem)) As Boolean
        Dim queryInvoice As String = "INSERT INTO tbl_Invoices (Date, CustomerID, TotalAmount) VALUES (@Date, @CID, @Total); SELECT SCOPE_IDENTITY();"
        Dim queryItem As String = "INSERT INTO tbl_InvoiceItems (InvoiceID, ProductID, Quantity, UnitPrice) VALUES (@IID, @PID, @Qty, @Price);"
        Dim queryUpdateStock As String = "UPDATE tbl_Products SET StockQty = StockQty - @Qty WHERE ProductID = @PID;"
Using conn As SqlConnection = dbHelper.GetConnection()
            conn.Open()
            Dim transaction As SqlTransaction = conn.BeginTransaction()
Try
                Dim totalAmount As Decimal = items.Sum(Function(i) i.Total)
                Dim invoiceId As Integer
' 1. Insert Invoice Header
                Using cmd As New SqlCommand(queryInvoice, conn, transaction)
                    cmd.Parameters.AddWithValue("@Date", DateTime.Now)
                    cmd.Parameters.AddWithValue("@CID", customerId)
                    cmd.Parameters.AddWithValue("@Total", totalAmount)
                    invoiceId = Convert.ToInt32(cmd.ExecuteScalar())
                End Using
' 2. Insert Items and Update Stock
                For Each item In items
                    ' Insert Item
                    Using cmd As New SqlCommand(queryItem, conn, transaction)
                        cmd.Parameters.AddWithValue("@IID", invoiceId)
                        cmd.Parameters.AddWithValue("@PID", item.ProductID)
                        cmd.Parameters.AddWithValue("@Qty", item.Quantity)
                        cmd.Parameters.AddWithValue("@Price", item.UnitPrice)
                        cmd.ExecuteNonQuery()
                    End Using
' Update Stock
                    Using cmd As New SqlCommand(queryUpdateStock, conn, transaction)
                        cmd.Parameters.AddWithValue("@Qty", item.Quantity)
                        cmd.Parameters.AddWithValue("@PID", item.ProductID)
                        cmd.ExecuteNonQuery()
                    End Using
                Next
transaction.Commit()
                Return True
Catch ex As Exception
                transaction.Rollback()
                ' Log error
                Return False
            End Try
        End Using
    End Function
End Class

CREATE TABLE tbl_Products (
    ProductID INT PRIMARY KEY IDENTITY(1,1),
    ProductCode NVARCHAR(20) UNIQUE,
    ProductName NVARCHAR(100),
    UnitPrice DECIMAL(18,2),
    StockQuantity INT,
    GST_Percent INT DEFAULT 0 -- 0, 5, 12, 18, 28
);

To make your vbnet billing software source code complete, add an invoice search form.

Public Class frmSearchInvoice
    Private Sub btnSearch_Click(sender As Object, e As EventArgs) Handles btnSearch.Click
        Dim query As String = "SELECT InvoiceNo, InvoiceDate, CustomerName, GrandTotal FROM tbl_Invoice_Master m INNER JOIN tbl_Customers c ON m.CustomerID = c.CustomerID WHERE InvoiceNo LIKE '%' + @search + '%'"
        Dim param As SqlParameter = New SqlParameter("@search", txtSearch.Text)
        dgvInvoices.DataSource = GetDataTable(query, param)
    End Sub
Private Sub dgvInvoices_DoubleClick(sender As Object, e As EventArgs) Handles dgvInvoices.DoubleClick
    Dim selectedInvoice As String = dgvInvoices.CurrentRow.Cells("InvoiceNo").Value.ToString()
    Dim frm As New frmInvoice()
    frm.LoadInvoiceForEdit(selectedInvoice)   ' Implement this method to fetch existing invoice
    frm.ShowDialog()
End Sub

End Class

Here is a simplified example of what the "Save Invoice" logic should look like in clean VB.NET code (using System.Transactions):

Imports System.Transactions
Public Sub SaveInvoice(customerID As Integer, items As List(Of InvoiceItem))
' Use TransactionScope to ensure all or nothing saves
Using scope As New TransactionScope()

In-Depth Review: VB.NET Billing Software Source Code

Introduction

The demand for efficient billing software has increased significantly in recent years, particularly among small to medium-sized businesses. A well-structured billing system can streamline financial operations, reduce errors, and enhance customer satisfaction. This review focuses on a VB.NET-based billing software source code, which claims to offer a comprehensive solution for businesses seeking to automate their billing processes.

Overview of the Software

The VB.NET billing software source code is designed to provide a customizable and user-friendly platform for managing billing operations. The software is built using Visual Basic .NET (VB.NET) and is compatible with the .NET framework. The source code is available for purchase or download, allowing developers to modify and tailor the software to meet specific business requirements.

Key Features

Upon examining the source code, we identified the following key features:

Technical Analysis

The VB.NET billing software source code appears to be well-structured and follows standard coding practices. The code is organized into logical modules, making it easier to navigate and modify. The software uses a Microsoft SQL Server database, which provides a robust and scalable data storage solution.

Pros and Cons

Pros:

Cons:

Conclusion

The VB.NET billing software source code provides a solid foundation for businesses seeking to automate their billing operations. While it offers a range of essential features, its scalability and integration capabilities are limited. However, for small to medium-sized businesses with simple billing requirements, this software can be a cost-effective solution.

Recommendations

Rating

Based on our in-depth review, we rate the VB.NET billing software source code as follows:

This rating reflects the software's potential as a cost-effective billing solution for small to medium-sized businesses, while also highlighting its limitations in terms of scalability and integration.

VB.NET billing software source code is a popular choice for students and small business developers looking for a cost-effective way to build desktop-based accounting solutions. Because VB.NET uses simple, readable syntax, it is highly accessible for beginners. Core Features of VB.NET Billing Systems

Most open-source VB.NET billing projects include these standard modules:

Customer & Employee Management: Databases to store contact details, purchase history, and staff permissions.

Inventory & Stock Tracking: Real-time monitoring of available products and automatic stock updates during sales.

Automated Invoicing: Generation of branded invoices and receipts with automatic tax and subtotal calculations.

Reporting & Analytics: Dashboards for daily sales, expense trends, and basic financial statements like balance sheets. Top Source Code Projects & Platforms Project Name Key Highlight Source/Link Supermarket Billing System Uses MS Access for lightweight data handling. GitHub Billing System (VB6/VB.NET) Popular academic project for BCA/BTech students. Kashipara Simple Accounting Focused on sole traders; includes VAT analysis and labels. SourceForge My Accounting Free accounting tool utilizing MS Access. SourceForge Pros & Cons of Using VB.NET Source Code Pros: vbnet+billing+software+source+code

Creating a billing software in typically involves setting up a database (like SQL Server), designing a Windows Form interface, and writing logic for calculations and invoice generation.

Below is a simplified structural breakdown and a core code example to help you get started. 1. Key Components of the System Database Management

: Use SQL Server or MS Access to store product lists, customer details, and transaction history. User Interface DataGridView to display items in the current bill, inputs for quantities/prices, and a to process the sale. Calculation Logic

: Methods to sum up item prices, apply taxes/discounts, and calculate the final balance. Invoice Printing PrintDocument

or external libraries to generate a physical or PDF receipt. 2. Core Source Code Snippet

This logic demonstrates a basic "Add to Bill" function where item totals are calculated and updated in a list.

Public Class BillingForm Dim totalBill As Double = 0

Private Sub btnAddItem_Click(sender As Object, e As EventArgs) Handles btnAddItem.Click
    ' Basic validation and calculation
    If txtPrice.Text <> "" And txtQuantity.Text <> "" Then
        Dim itemTotal As Double = CDbl(txtPrice.Text) * CInt(txtQuantity.Text)
' Add item to the DataGridView
        dgvBillItems.Rows.Add(txtItemName.Text, txtPrice.Text, txtQuantity.Text, itemTotal)
' Update the grand total
        UpdateTotal(itemTotal)
    End If
End Sub
Private Sub UpdateTotal(amount As Double)
    totalBill += amount
    lblGrandTotal.Text = "Total: $" & totalBill.ToString("N2")
End Sub
Private Sub btnPrint_Click(sender As Object, e As EventArgs) Handles btnPrint.Click
    ' Code to trigger the PrintDialog or PrintPreview
    PrintDocument1.Print()
End Sub

End Class Use code with caution. Copied to clipboard 3. Learning Resources & Templates

For more advanced, object-oriented implementations, you can explore these specialized tutorials and repositories:

It sounds like you're looking for a useful piece of VB.NET source code related to billing software — possibly a complete project or a key module (e.g., invoice generation, product billing, GST/tax calculation, receipt printing). The UI is built using Windows Forms

Since I can’t directly send files, here’s a practical VB.NET billing software snippet you can use or expand.
This example covers:

| Column Name | Data Type | Description | | :--- | :--- | :--- | | CustomerID | INT (PK, Identity) | Unique ID | | CustomerName | NVARCHAR(100) | Bill to name | | GSTIN | NVARCHAR(15) | Customer GST number | | Phone | NVARCHAR(15) | Contact |