public static DAGIAC KhoiTao(String Chuoi) { DAGIAC kq; kq.Dinh = null; if (KiemTra(Chuoi)) { String[] M = Chuoi.Split(new String[] { ChuoiPhanCach }, StringSplitOptions.None); kq.Dinh = new DIEM[M.Length]; for (int i = 0; i < M.Length; i++) { kq.Dinh[i] = XuLyDiem.KhoiTao(M[i]); } } return(kq); }