private static void _InternalExtractAll(this ZipFile zipFile, string path, bool overrideExtractExistingProperty)
        {
            bool verbose = zipFile.StatusMessageTextWriter != null;
            bool header  = verbose;

            zipFile.SetInExtractAll(true);
            try
            {
                zipFile.OnExtractAllStarted(path);

                int n = 0;
                foreach (ZipEntry e in zipFile.Entries)
                {
                    if (header)
                    {
                        zipFile.StatusMessageTextWriter.WriteLine("\n{1,-22} {2,-8} {3,4}   {4,-8}  {0}",
                                                                  "Name", "Modified", "Size", "Ratio", "Packed");
                        zipFile.StatusMessageTextWriter.WriteLine(new System.String('-', 72));
                        header = false;
                    }
                    if (verbose)
                    {
                        zipFile.StatusMessageTextWriter.WriteLine("{1,-22} {2,-8} {3,4:F0}%   {4,-8} {0}",
                                                                  e.FileName,
                                                                  e.LastModified.ToString("yyyy-MM-dd HH:mm:ss"),
                                                                  e.UncompressedSize,
                                                                  e.CompressionRatio,
                                                                  e.CompressedSize);
                        if (!String.IsNullOrEmpty(e.Comment))
                        {
                            zipFile.StatusMessageTextWriter.WriteLine("  Comment: {0}", e.Comment);
                        }
                    }
                    e.Password = zipFile.Password;  // this may be null
                    zipFile.OnExtractEntry(n, true, e, path);
                    if (overrideExtractExistingProperty)
                    {
                        e.ExtractExistingFile = zipFile.ExtractExistingFile;
                    }
                    e.Extract(path);
                    n++;
                    zipFile.OnExtractEntry(n, false, e, path);
                    if (zipFile.IsExtractOperationCanceled())
                    {
                        break;
                    }
                }

                if (!zipFile.IsExtractOperationCanceled())
                {
                    zipFile.OnExtractAllCompleted(path);
                }
            }
            finally
            {
                zipFile.SetInExtractAll(false);
            }
        }