private void button2_Click(object sender, EventArgs e)
        {
            AltKume gec = new AltKume();

            this.Hide();
            gec.ShowDialog();
        }
 private void button2_Click(object sender, EventArgs e)
 {
     AltKume gec = new AltKume();
     this.Hide();
     gec.ShowDialog();
 }