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// For complete examples and data files, please go to https://github.com/groupdocs-metadata/GroupDocs.Metadata-for-.NET
// path to the input directory
const string dir1 = @"C:\download files";
// initialize DirectoryInfo
DirectoryInfo directoryInfo = new DirectoryInfo(dir1);
// get files using extension method
FileInfo[] files2 = directoryInfo.GetFiles(DocumentType.Jpeg);