public MainForm()
{
InitializeComponent();
invoice = new SalesInvoice();
}
}//End FrmSalesInvoice()
/// <summary>
/// Purpose: a region that holds all the events that are called from the GUI
/// </summary>
#region Events
/// <summary>
/// Purpose: An event that creates a SalesInvoice object called "si" to be used in this app.
/// </summary>
private void FrmSalesInvoice_Load(object sender, EventArgs e)
{
si = new SalesInvoice();
UpdateDisplay();
}//End FrmSalesInvoice_Load()
