private void btnCopy_Click(object sender, RoutedEventArgs e)
{
bool result = cr.CopyPromotionProductFromSourceToTarget(multiplepromotionid, int.Parse(cmbPromotion.SelectedValue.ToString()));
if (result)
{
MessageBox.Show("Promotion products have been successfully copied.");
}
else
{
MessageBox.Show("Copy failed.");
}
}
