private void câpNhâtChưcVuToolStripMenuItem_Click(object sender, EventArgs e)
        {
            ChucVu cv = new ChucVu();

            cv.Show();
        }
 private void câpNhâtChưcVuToolStripMenuItem_Click(object sender, EventArgs e)
 {
     ChucVu cv = new ChucVu();
     cv.Show();
 }