string filepath = label4.Text;
                DirectoryInfo rootDir = new DirectoryInfo(filepath);
                FileInfo[] allFiles = null;    try { allFiles = rootDir.GetFiles();  }  catch { }
                foreach(KeyValuePair<string, string> ext in extensions)
                {
                    try
                    {
                        foreach (FileInfo fi in allFiles)
                        { if (extensions.ContainsKey(fi.Extension))
                        { files.Add(fi.FullName.ToString()); label8.Text = fi.FullName; } }

                    }
                    catch (UnauthorizedAccessException)
                    { }
                    subDirs = rootDir.GetDirectories();
                    foreach (DirectoryInfo dirInfo in subDirs)
                    {
                        try
                        {
                            foreach (string GFI in files)
                            {
                                label7.Text = Path.GetDirectoryName(GFI);
                                label8.Text = Path.GetFileName(GFI);
                                files.Add(GFI);
                                label7.Text = "Directory";
                                label8.Text = "File";
                            }
                        }
                        catch (UnauthorizedAccessException) { }
                    }

                }
            }