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using (var signature = new Signature("archive.zip"))
{
    // create list of signature options
    var bcOptions = new BarcodeSearchOptions(BarcodeTypes.Code128);
    var qrOptions = new QrCodeSearchOptions(QrCodeTypes.QR);

    // setup search options
    List<SearchOptions> listOptions = new List<SearchOptions>() { bcOptions, qrOptions };

    // search archive for documents
    var searchResult = signature.Search(listOptions);

    // check the result                
    Console.WriteLine("\nList of successfully processed documents:");
    int number = 1;
    foreach (DocumentResultSignature document in searchResult.Succeeded)
    {
        Console.WriteLine($"Document #{number++}: {document.FileName}. Processed: {document.ProcessingTime}, mls");
        foreach (BaseSignature temp in document.Succeeded)
        {
            Console.WriteLine($"\t\t#{temp.SignatureId}: {temp.SignatureType}");
        }
    }
    if (searchResult.Failed.Count > 0)
    {
        Console.WriteLine("\nList of failed documents:");
        number = 1;
        foreach (DocumentResultSignature document in searchResult.Failed)
        {
            Console.WriteLine($"ERROR in Document #{number++}-{document.FileName}: {document.ErrorMessage}, mls");
        }
    }
}