Sometimes when indexing, it is necessary to associate each Document with certain additional metadata, for example, a set of tags, a number in the library catalog, the subject of a Document, etc. To accomplish this task, additional fields can be added to each indexed Document in addition to those already in the Document itself.
Additional fields are associated with the Document through the arguments of the FileIndexing event that occurs before indexing each added Document....Viewer Product Solution GroupDocs...Acquisition Ask AI GroupDocs Documentation / GroupDocs.Search Product...
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Detecting the version of a PDF Document The following sample of code will help you to detect the PDF version a loaded Document and extract some additional file format information.
Load a PDF Document Extract the root metadata package Use the FileType property to obtain file format information AdvancedUsage.ManagingMetadataForSpecificFormats.Document.Pdf.PdfReadFileFormatProperties
using (Metadata metadata = new Metadata(Constants.InputPdf)) { var root = metadata.GetRootPackage(); Console.WriteLine(root.FileType.FileFormat); Console.WriteLine(root.FileType.Version); Console.WriteLine(root.FileType.MimeType); Console.WriteLine(root.FileType.Extension); } Reading built-in metadata properties To access built-in metadata of a PDF Document, please use the DocumentProperties property defined in the DocumentRootPackage class....Viewer Product Solution GroupDocs...Acquisition Ask AI GroupDocs Documentation / GroupDocs.Metadata Product...