Sign document with XAdES Digital signature

This feature is supported only for Spreadsheet document types

GroupDocs.Signature provides DigitalSignOptions class to specify different amount of settings for Digital signature same as property XAdES of XAdES enumeration type. This property specifies the implementation of XAdES format for Spreadsheet documents only (for now).

Here are the steps to add XAdES type signature into document with GroupDocs.Signature:

This example shows how to add Digital signature to document. See SignResult 

using (Signature signature = new Signature("sample.xlsx"))
    DigitalSignOptions options = new DigitalSignOptions("certificate.pfx")
        // set XAdES type
        XAdESType = XAdESType.XAdES,
        // certificate password
        Password = "1234567890",
        // digital certificate details
        Reason = "Sign",
        Contact = "JohnSmith",
        Location = "Office1"
    SignResult signResult = signature.Sign(outputFilePath, options);

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.