private void testDirFilenameExtListToolStripMenuItem_Click(object sender, EventArgs e) { if (!SetOperationRunning()) { return; } openArchiveDialog.Filter = "File containing filenames to test|*.txt"; if (openArchiveDialog.ShowDialog() == DialogResult.OK) { // supposed to be small enough to avoid threading. long newlyFound = hashCreator.ParseDirFilenamesExt(openArchiveDialog.FileName , Path.GetDirectoryName(openArchiveDialog.FileName) + '/' + "dirnames.txt" , Path.GetDirectoryName(openArchiveDialog.FileName) + '/' + "extnames.txt"); } OperationFinished(); }