ME3Explorer.KFreonTPFTools3.BulkExtractTPFButton_Click C# (CSharp) Method

        private void BulkExtractTPFButton_Click(object sender, EventArgs e)
        {
            string outputPath = null;

            var dialog = new CommonOpenFileDialog();
            dialog.IsFolderPicker = true;
            dialog.EnsurePathExists = true;
            dialog.Title = "Select folder containing multiple TPF's to extract.";
            if (dialog.ShowDialog() == CommonFileDialogResult.Ok)
                outputPath = dialog.FileName;
            else
                return;


            OverallProgressBar.Value = 0;
            var tpfs = Directory.EnumerateFiles(outputPath);
            OverallProgressBar.Maximum = tpfs.Count();
            foreach (var item in tpfs)
            {
                if (!item.EndsWith(".tpf", StringComparison.OrdinalIgnoreCase))  // KFreon: TPF's only.
                    continue;

                SaltTPF.ZipReader zippy = new SaltTPF.ZipReader(item);

                OverallStatusLabel.Text = "Extracting " + Path.GetFileName(zippy._filename);

                // KFreon: Create individual directory
                string extractPath = Path.Combine(outputPath, Path.GetFileNameWithoutExtension(zippy._filename));
                Directory.CreateDirectory(extractPath);

                List<string> hashes = GetHashesFromTPF(zippy, false);

                for (int i = 0; i < zippy.Entries.Count - 1; i++) 
                {
                    var entry = zippy.Entries[i];
                    string filename = entry.Filename;
                    string hash = hashes[i].Split('|').First();

                    if (!filename.Contains(hash))
                    {
                        string tempname = Path.GetFileNameWithoutExtension(filename);
                        filename = filename.Replace(tempname, tempname + "_" + hash);
                    }

                    if (File.Exists(Path.Combine(extractPath, filename)))
                        continue;

                    entry.Extract(false, Path.Combine(extractPath, filename));
                }

                OverallProgressBar.Value++;
            }

            OverallProgressBar.Value = OverallProgressBar.Maximum;
            MessageBox.Show("Done");
        }