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 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}", metadataSignature.Name, metadataSignature.Value);
    }
}

More resources

GitHub Examples

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

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.