private void comboTip_SelectedIndexChanged(object sender, EventArgs e)
{
Automobil auto = new Automobil();
if (comboModel.SelectedIndex != 0 && comboTip.SelectedIndex != 0)
{
int modelTipID = auto.DohvatiModelTipID((int)comboModel.SelectedValue, (int)comboTip.SelectedValue);
label4.Text = modelTipID.ToString();
}
else
{
label4.Text = "-1";
}
}