private void NewProduct_Click(object sender, RoutedEventArgs e)
{
EditProductWindow _new = new EditProductWindow(null);
_new.ShowDialog();
updateProducts();
}
private void Products_MouseDoubleClick(object sender, MouseButtonEventArgs e)
{
Product selected = (Product)Products.SelectedItem;
EditProductWindow _new = new EditProductWindow(selected);
_new.ShowDialog();
updateProducts();
}