Search for built-in Metadata signatures

GroupDocs.Signature provides MetadataSearchOptions class to specify different options to search for Metadata signatures.

Most document types such as Word Processing, Spreadsheet and Presentation contains built-in metadata properties. Using property setIncludeBuiltinProperties of MetadataSearchOptions allows to collect all supported built-in metadata properties of document. These properties are like document author, creation date, document keywords, titles, etc.

Here are the steps to search for metadata signatures within the document with GroupDocs.Signature:

Create new instance of Signature class and pass source document path as a constructor parameter.
Instantiate the MetadataSearchOptions object according to your requirements and specify setIncludeBuiltinProperties to true
Call search method of Signature class instance and pass MetadataSearchOptions to it.

This example shows how to get built in Metadata signatures.

Signature signature = new Signature("sample.xlsx");
MetadataSearchOptions options = new MetadataSearchOptions();
options.setName("Producer");
options.setIncludeBuiltinProperties(true);
options.setNameMatchType(TextMatchType.Contains);
 
// search for signatures in document
List<MetadataSignature> signatures = signature.search(MetadataSignature.class, options);
System.out.print("\nSource document contains following signatures.");
for (MetadataSignature metadataSignature : signatures)
{
    System.out.print("Metadata signature found. Name : "+metadataSignature.getName()+". Value: "+ metadataSignature.getValue());
}

More resources

GitHub Examples

You may easily run the code above and see the feature in action in our GitHub examples:

Free Online App

Along with full-featured .NET library we provide simple, but powerful free Apps.
You are welcome to eSign PDF, Word, Excel, PowerPoint documents with free to use online GroupDocs Signature App.

Advanced search for Image signatures Advanced search for Form Field signatures