private void lvDSKL_NH_SelectedIndexChanged(object sender, EventArgs e)
{
if (lvDSKL_NH.SelectedItems.Count != 0)
{
string maKhoiLop = lvDSKL_NH.SelectedItems[0].SubItems[1].Text;
KhoiLop khoiLop = khoilopbll.GetKhoiLop(maKhoiLop);
tbTenKL_DSKL.Text = khoiLop.TenKhoiLop;
tbMaKL_DSKL.Text = khoiLop.MaKhoiLop;
tbBan_DSKL.Text = khoiLop.Ban;
tbNH_DSKL.Text = khoiLop.MaNamHoc;
int countKhoiLop = lopBLL.CountSoLuongLopTheoKhoi(khoiLop.MaKhoiLop);
tbSoLuongLop_DSKL.Text = countKhoiLop.ToString();
}
}
