private void quảnLýDinhViênToolStripMenuItem_Click(object sender, EventArgs e)
{
frmSinhVien sv = new frmSinhVien();
sv.Show();
this.Close();
}
private void toolStripQLSV_Click(object sender, EventArgs e)
{
frmSinhVien sv = new frmSinhVien();
sv.Show();
this.Close();
}
