/// <summary>
/// Constructor method for class FrmCatalogue. Stores the reference to the FrmSales object that
/// instantiated this. Uses that reference to send back data.
/// </summary>
/// <param name="frm">The sales form that called this method.</param>
public FrmCatalogue(FrmSales frm)
{
InitializeComponent();
business = Business.getBusiness();
frmSales = frm;
}