private void btn_arac_Click(object sender, EventArgs e)
{
arac arc = new arac();
arc.ad = ad;
arc.tc = tc;
arc.rol = rol;
arc.ShowDialog();
}
/****************************************************************************************/
private void btn_arac_Click(object sender, EventArgs e)
{
arac ar = new arac();
ar.ad = ad;
ar.tc = tc;
ar.rol = rol;
ar.Show();
}