Verify Text signatures in the document

GroupDocs.Signature providesΒ TextVerifyOptionsΒ classΒ to specify different options for verification of Text signatures.

Here are the steps to verify Text signature within the document with GroupDocs.Signature:

  • Create new instance ofΒ SignatureΒ class and pass source document path as a constructor parameter.
  • Instantiate theΒ TextVerifyOptionsΒ object according to your requirements and specify verification options
  • CallΒ VerifyΒ method ofΒ Signature class instance and passΒ TextVerifyOptionsΒ to it.

This example shows how to verify Text signature in the document.

using (Signature signature = new Signature("sample.pdf"))
{
        TextVerifyOptions options = new TextVerifyOptions()
        {
            AllPages = true, // this value is set by default
            SignatureImplementation = TextSignatureImplementation.Stamp,
            Text = "John",
            MatchType = TextMatchType.Contains
        };
        // verify document signatures
        VerificationResult result = signature.Verify(options);
        if(result.IsValid)
        {
            Console.WriteLine("\nDocument was verified successfully!");
        }
        else
        {
            Console.WriteLine("\nDocument failed verification process.");
        }
}

Advanced Usage Topics

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

More resources

GitHub Examples

You may easily run the code above and see the feature in action in ourΒ 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.