private void button1_Click(object sender, EventArgs e)
        {
            Ortak ortak = new Ortak();

            ortak.deviceIndex = comboBox1.SelectedIndex + 1;
            Form2 frm = new Form2(ortak);

            frm.Show();
            this.Hide();
        }
 public Form2(Ortak o) : this()
 {
     deviceIndex = o.deviceIndex;
 }