private void GetInvoice_Button_Click(object sender, RoutedEventArgs e)
{
Retrieve_Invoice GetInvoice = new Retrieve_Invoice();
ShowBox.Navigate(GetInvoice);
}
private void Summary_Click(object sender, RoutedEventArgs e)
{
Summary_Report Get_Summary = new Summary_Report();
ShowBox.Navigate(Get_Summary);
}
private void EnterInvoice_Button_Click(object sender, RoutedEventArgs e)
{
EnterInvoice Enter = new EnterInvoice();
ShowBox.Navigate(Enter);
}
