private void Anaform_FormClosed(object sender, FormClosedEventArgs e)
        {
            this.Hide();
            Giris frm = new Giris();

            frm.Show();
        }
        private void çıkışToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.Close();
            Giris frm = new Giris();

            frm.Show();
        }