private void button_file_Click(object sender, RoutedEventArgs e)
{
Zapis wczytywanie = new Zapis(siatka, buffer, tab);
wczytywanie.Show();
this.Close();
}
private void button_save_Click(object sender, RoutedEventArgs e)
{
Zapis zapis = new Zapis(buffer);
zapis.Show();
}