Search for built-in Metadata signatures Leave feedback

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 IncludeBuiltinProperties 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 IncludeBuiltinProperties to true
• Call Search method of Signature class instance and pass MetadataSearchOptions to it.

This example shows how to get built in Metadata signatures.

using (Signature signature = new Signature("sample.xlsx"))
{
    MetadataSearchOptions options = new MetadataSearchOptions()
    {
        Name = "Producer",
        IncludeBuiltinProperties = true,
        NameMatchType = TextMatchType.Contains
    };
    // search for signatures in document
    List<SpreadsheetMetadataSignature> signatures = signature.Search<SpreadsheetMetadataSignature>(options);
    Console.WriteLine("\nSource document contains following signatures.");
    foreach (var metadataSignature in signatures)
    {
        Console.WriteLine("Metadata signature found. Name : {0}. Value: {1}. Type: {2}", metadataSignature.Name, metadataSignature.Value,metadataSignature.Type);
    }
}

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

• GroupDocs.Signature for .NET examples, plugins, and showcase
• GroupDocs.Signature for Java examples, plugins, and showcase
• Document Signature for .NET MVC UI Example
• Document Signature for .NET App WebForms UI Example
• Document Signature for Java App Dropwizard UI Example
• Document Signature for Java Spring UI Example

Along with the full-featured .NET library, we provide simple but powerful free online apps.

To sign PDF, Word, Excel, PowerPoint, and other documents you can use the online apps from the GroupDocs.Signature App Product Family.