private void linkLabelgeri_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
        {
            this.Hide();
            Formogretmen fr = new Formogretmen();

            fr.Show();
        }
        private void pictureBox2_Click(object sender, EventArgs e)
        {
            Formogretmen frogrt = new Formogretmen();

            frogrt.Show();
        }