private void addBtn_Click(object sender, RoutedEventArgs e)
{
BuyerConfig config = new BuyerConfig();
config.Show();
this.Hide();
}
private void OnHyperlinkClick(object sender, RoutedEventArgs e)
{
Hyperlink button = sender as Hyperlink;
BuyerList buyer = button.DataContext as BuyerList;
BuyerConfig config = new BuyerConfig();
config.id = buyer.id;
config.Show();
this.Hide();
}