private void listView1_MouseClick(object sender, MouseEventArgs e)
{
DAO_NhanVien dao = new DAO_NhanVien();
tbHoTen.Text = listView1.SelectedItems[0].SubItems[1].Text;
tbDiaChi.Text = listView1.SelectedItems[0].SubItems[2].Text;
tbSDT.Text = listView1.SelectedItems[0].SubItems[3].Text;
dtpNgayBatDau.Text = listView1.SelectedItems[0].SubItems[4].Text;
dtpNgayKetThuc.Text = listView1.SelectedItems[0].SubItems[5].Text;
long ID = Convert.ToInt32(dao.IDPhanQuyen(listView1.SelectedItems[0].SubItems[6].Text));
cbbPhanQuyen.Text = ID.ToString();
}