private void btnDiscount_Click(object sender, RoutedEventArgs e)
{
ListWindow frm = new ListWindow("Discount",curStaff);
frm.ShowDialog();
}
private void btnSupplier_Click(object sender, RoutedEventArgs e)
{
ListWindow frm = new ListWindow("Supplier",curStaff);
frm.ShowDialog();
}
private void LoadListForm(string Order)
{
ListWindow frm = new ListWindow(Order,curStaff);
frm.ShowDialog();
}