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// For complete examples and data files, please go to https://github.com/groupdocs-metadata/GroupDocs.Metadata-for-.NET

string[] files = Directory.GetFiles(directoryPath);

foreach (string path in files) {
	// detect format
	FormatBase format = FormatFactory.RecognizeFormat(path);
	if (format == null) {
	// skip unsupported format
		continue;
	}

	if (format.Type == DocumentType.Wav) {
			Console.WriteLine("File {0} has WAV format", Path.GetFileName(path));
	}
}