private void button2_Click(object sender, EventArgs e)
{
Klienci k = new Klienci("dialog");
k.ShowDialog();
label25.Text = k.klientID;
dodajKlienta(int.Parse(label25.Text));
}
private void button6_Click(object sender, EventArgs e)
{
this.Hide();
Klienci k = new Klienci("main");
k.Show();
}