String s[] = new String[100000];
        int n = 0;

        Date start = new Date();
        Date end = new Date();
        List Stroki = new ArrayList();
        try {
            Stroki = java.nio.file.Files.readAllLines(Paths.get("d:/book/b1.txt"),                  
                                 StandardCharsets.UTF_8);
        } catch (IOException ex) {
            Logger.getLogger(NewJFrame.class.getName()).log(Level.SEVERE, null, ex);
        }
        
        end = new Date();
        System.out.println(end.getTime() - start.getTime());

            string[] Stroki = new string[100000];
            int i = 0;
            int n = 0;
            DateTime start = DateTime.Now;
            DateTime end = DateTime.Now; 
            try
            {
                using (StreamReader sr = new StreamReader("d:/book/b1.txt"))
                {
                    
                    while ( true )
                    {
                        string line = sr.ReadLine();
                        if (line == null && i >= 100000)
                        {
                            break;
                        }
                        Stroki[i++] = line;
                        n = i;
                        //                    Console.WriteLine(line);
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("The file could not be read:");
                Console.WriteLine(ex.Message);
            }
            end = DateTime.Now;

            MessageBox.Show("Всего: " + n + "; Время: " + (end - start));

          DateTime start = DateTime.Now;
            DateTime end = DateTime.Now; 

            string[] s = File.ReadAllLines("d:/book/b1.txt");

            MessageBox.Show("Всего строк: " + s.Length + "; start="  + start.Millisecond + "; end=" + end.Millisecond);