Использование данных последней строки из массива - C#

 static void Main(string[] args)
 
            {
                FileStream logFileStream = new FileStream("D:\\sts\\22.54.14.txt", FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
                StreamReader logFileReader = new StreamReader(logFileStream, Encoding.UTF8);
                int n = 6;
                for (int i = 0; i < n; i++)
                    logFileReader.ReadLine();
 
                while (!logFileReader.EndOfStream)
                {
 
                    string line = logFileReader.ReadLine();
 
                    string[] parametrs = line.Split(';');
                    string spd = parametrs[1];
                    int nn = Convert.ToInt32(spd);
                    int first = nn / 10; int second = nn % 10;
                    Console.WriteLine(nn);
                    if (nn > 10 )
                    {
                        SoundPlayer simpleSound = new SoundPlayer(@"D:\DISTR\project\4.wav");
                        simpleSound.PlayLooping();
 
                    }
                    logFileReader.Close();
                    logFileStream.Close();
                    Console.ReadKey();
                }