public static Boolean KiemTra(String Chuoi) { Boolean flag = true; String[] M = Chuoi.Split(new String[] { ChuoiPhanCach }, StringSplitOptions.None); flag = M.Length >= 3; if (flag) { for (int i = 0; i < M.Length; i++) { flag = XuLyDiem.KiemTra(M[i]); if (flag) { break; } } } return(flag); }