private void cbo_indexchanged()
{
if (MaHD.Length == 6)
{
if (bd.LuuHoadon(ref err, MaHD, cls_Main.MaNV, MaMon))
{
DataTable dt = new DataTable();
dt = bd.Laydanhsachhangdangban(mahd);
for (int i = 0; i < dt.Rows.Count; i++)
{
if (dt.Rows[i]["MaMon"].ToString() == MaMon)
{
index = Convert.ToInt16(dt.Rows[i]["STT"]) - 1;
}
}
laydulieuhangdangban(MaHD);
}
}
}