public DataTable LayTheNhanVien(string MaNV)
{
SqlConnection con = ThaoTacDuLieu.TaoVaMoKetNoi();
string sql = string.Format("SELECT * FROM NHANVIEN, CHUCVU WHERE NHANVIEN.MACV = CHUCVU.MACV AND MANV = '{0}'", MaNV);
DataTable thenv = ThaoTacDuLieu.ThucThiTruyVan(sql, con);
return(thenv);
}
