//xoa khu vuc public static bool XoaBoPhan(string maKhuVuc) { return(DL_BoPhan.BoPhanXoa(maKhuVuc)); }
//them public static bool ThemBoPhan(string ma, string ten) { return(DL_BoPhan.BoPhanThem(ma, ten)); }
//sua public static bool SuaBoPhan(string ma, string ten) { return(DL_BoPhan.BoPhanSua(ma, ten)); }
public static DataTable LayDuLieuBoPhan() { return(DL_BoPhan.DuLieuBoPhan()); }