When saving, you must insert one record into the Invoices table and multiple records into InvoiceItems .
Billing software is data-heavy. Look for a project that uses (Express or Standard). The code should demonstrate:
Imports System.Data.SqlClient Module dbConnection ' Replace with your actual SQL Server instance credentials Public ConnString As String = "Data Source=YOUR_SERVER_NAME;Initial Catalog=BillingDB;Integrated Security=True" Public Function GetConnection() As SqlConnection Dim conn As New SqlConnection(ConnString) Try If conn.State = ConnectionState.Closed Then conn.Open() End If Return conn Catch ex As Exception MsgBox("Database Connection Error: " & ex.Message, MsgBoxStyle.Critical, "Error") Return Nothing End Try End Function End Module Use code with caution. 2. Main Billing Form Interface ( frmBilling.vb )
When saving, you must insert one record into the Invoices table and multiple records into InvoiceItems .
Billing software is data-heavy. Look for a project that uses (Express or Standard). The code should demonstrate: vbnet+billing+software+source+code
Imports System.Data.SqlClient Module dbConnection ' Replace with your actual SQL Server instance credentials Public ConnString As String = "Data Source=YOUR_SERVER_NAME;Initial Catalog=BillingDB;Integrated Security=True" Public Function GetConnection() As SqlConnection Dim conn As New SqlConnection(ConnString) Try If conn.State = ConnectionState.Closed Then conn.Open() End If Return conn Catch ex As Exception MsgBox("Database Connection Error: " & ex.Message, MsgBoxStyle.Critical, "Error") Return Nothing End Try End Function End Module Use code with caution. 2. Main Billing Form Interface ( frmBilling.vb ) When saving, you must insert one record into
