private void ExtractorApache24Async_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (ExtractorApache24Async.IsBusy) { ExtractorApache24Async.CancelAsync(); } if (!File.Exists(phjPath) && IsDirectoryEmpty(rootPath + @"\Apache24\htdocs")) { InstallPHJAsync.RunWorkerAsync(); } else if (File.Exists(phjPath) && IsDirectoryEmpty(rootPath + @"\Apache24\htdocs")) { ExtractorPHJAsync.RunWorkerAsync(); } }