Verify QR-code signatures in the document

GroupDocs.Signature provides QrCodeVerifyOptions class 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 of Signature class and pass source document path as a constructor parameter.
  • Instantiate the QrCodeVerifyOptions object according to your requirements and specify verification options
  • Call Verify method of Signature class instance and pass QrCodeVerifyOptions 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.");
    }
}

More resources

Advanced Usage Topics

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

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.