SGDecoder

using System;
using System.IO;
using System.Text;

namespace FileLogDecoder
{
    class Program
    {
        static void Main(string[] args)
        {

            string pathexec;
            pathexec = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
            string foldercreatepath = pathexec + "\\Output";   //Folder Path
            string filecreatepath = foldercreatepath + "\\Data.txt"; //File Path
            string dirpath = pathexec + "\\";

            Directory.CreateDirectory(foldercreatepath);
            using (StreamWriter sw = new StreamWriter(filecreatepath, true))
            {
                try
                {
                    string[] dirs = Directory.GetFiles(dirpath, "*.txt");
                    Console.WriteLine("The number of text files in this directory is {0}.", dirs.Length);
                    foreach (string dir in dirs)
                    {
                        Console.WriteLine(dir);

                        using (FileStream F = new FileStream(dir, FileMode.Open, FileAccess.Read))
                        {
                            try
                            {
                                using (StreamReader sr = new StreamReader(dir))
                                {
                                    string line;
                                    StringBuilder sb = new StringBuilder();

                                    while ((line = sr.ReadLine()) != null)
                                    {
                                        line = line.Replace(" ", string.Empty);
                                        if (!Char.IsLetterOrDigit(line[0]) && !Char.IsDigit(line[line.Length-1]))
                                        {
                                            int five = 0;
                                            int times = 0;
                                            StringBuilder word = new StringBuilder();
                                            string word2 = String.Empty;
                                            for (int j = 1; j < line.Length; j++)
                                            {
                                                char x = line[j];
                                                if (char.IsLetterOrDigit(line[j]))
                                                {
                                                    word.Append(line[j]);
                                                    five++;
                                                    if (five >= 5)
                                                    {
                                                        word2 = word.ToString();
                                                        times++;
                                                    }

                                                }
                                                else
                                                {
                                                    five = 0;
                                                    word.Clear();
                                                }

                                            }
                                            if (times == 1)
                                            {
                                                sb.Append(word2 + Environment.NewLine);
                                            }
                                        }
                                    }
                                    Console.WriteLine(sb);
                                }
                            }
                            catch (Exception e)
                            {
                                Console.WriteLine("The file could not be read:");
                                Console.WriteLine(e.Message);
                            }
                        }

                        /* -------------------------- */
                    }
                }
                catch (Exception e)
                {
                    Console.WriteLine("The process failed: {0}", e.ToString());
                }


                sw.Close();
                Console.WriteLine("\nPress any key to exit!");
                Console.ReadKey();
            } //File
        }

    }
}