Verify QR-code signatures in the document

GroupDocs.Signature providesΒ QrCodeVerifyOptionsΒ classΒ to specify different options for verification of QR-code signatures.

Here are the steps to verify qr-code signature within the document with GroupDocs.Signature for .NET API:

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

This example shows how to verify QR-code signature in the document.

using (Signature signature = new Signature("sample.pdf"))
{
    QrCodeVerifyOptions options = new QrCodeVerifyOptions()
    {
        AllPages = true, // this value is set by default
        Text = "John",
        MatchType = TextMatchType.Contains
        // set encode type
        // if this value is not set any barcode type will be valid
        EncodeType = QrCodeTypes.QR
    };
    // 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 generate QR codes and/or sign your files with QR codes for free, you can use the QR Code Generator online app.

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