eSign Presentation with Metadata signature

GroupDocs.Signature provides PresentationMetadataSignature class to specify different Metadata signature objects for MetadataSignOptions instance to sign Presentation document files. Presentation document metadata is hidden attributes, some of them are visible only over viewing standard document properties like Author, Creation Date, Producer, Entry, Keywords etc.
Presentation document metadata contains pair of Name and Value, Name should be unique within the document.
Presentation document metadata could keep big amount of data that allows provides ability to keep serialized custom objects with additional encryption in there.

Here are the steps to add metadata signatures into Presentation document with GroupDocs.Signature:

How to eSign Presentation with Metadata signature

This example shows how to add Metadata signature to Presentation document.

using (Signature signature = new Signature("sample.ppsx"))
{
    MetadataSignOptions options = new MetadataSignOptions();

    // Create few Presentation Metadata signatures
    PresentationMetadataSignature[] signatures = new PresentationMetadataSignature[]
    {
        new PresentationMetadataSignature("Author", "Mr.Scherlock Holmes"),
        new PresentationMetadataSignature("DateCreated", DateTime.Now),
        new PresentationMetadataSignature("DocumentId", 123456),
        new PresentationMetadataSignature("SignatureId", 123.456M)
    };
    options.Signatures.AddRange(signatures);
    signature.Sign("SampleSigned.ppsx", options);
}

Advanced Usage Topics

To learn more about document eSign features, please refer to the advanced usage section.

More resources

GitHub Examples

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

Free Online Apps

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.