private void lvCTDT_SelectedIndexChanged(object sender, EventArgs e)
{
if (lvCTDT.SelectedItems.Count > 0)
{
ListViewItem lv = lvCTDT.SelectedItems[0];
string maKhoi = lv.SubItems[1].Text;
string MaMon = lv.SubItems[2].Text;
string heSo = lv.SubItems[3].Text;
tbMaKL_CTDT.Text = maKhoi;
tbMaMH_CTDT.Text = MaMon;
tbHeSoCTDT.Text = heSo;
}
KhoiLopBLL lopBll = new KhoiLopBLL();
KhoiLop lop = lopBll.GetKhoiLop(tbMaKL_CTDT.Text);
tbTenKhoi_CTDT.Text = lop.TenKhoiLop;
MonHocBLL mh = new MonHocBLL();
MonHoc mon = mh.GetMonHoc(tbMaMH_CTDT.Text);
tbTenMH_CTDT.Text = mon.TenMonHoc;
}