Problem with RPS Signature and Batch (NFS-e)

Question

I’m trying to sign the data block of the Gerarnfse method.

It is necessary to sign the RPS and the batch. However, when sending, I always get the invalid signature message.

Follow the code I’m using:

public static void AssinarNFSe(XmlDocument doc, X509Certificate2 certificado)
    {
        XmlNodeList ListInfRps = doc.GetElementsByTagName("InfRps");
        int NodeCounter = 1;

        foreach (XmlElement InfRps in ListInfRps)
        {
            string idRPS = InfRps.Attributes.GetNamedItem("Id").Value;
            SignedXml signedXmlRps = new SignedXml(InfRps);

            signedXmlRps.SigningKey = certificado.PrivateKey;
            Reference referenceRps = new Reference("#" + idRPS);
            referenceRps.AddTransform(new XmlDsigEnvelopedSignatureTransform());
            referenceRps.AddTransform(new XmlDsigC14NTransform());
            signedXmlRps.AddReference(referenceRps);

            KeyInfo keyInfoRps = new KeyInfo();
            keyInfoRps.AddClause(new KeyInfoX509Data(certificado));
            signedXmlRps.KeyInfo = keyInfoRps;

            signedXmlRps.ComputeSignature();

            XmlElement xmlSignatureRps = doc.CreateElement("Signature", "http://www.w3.org/2000/09/xmldsig#");

            XmlAttribute attrRps = doc.CreateAttribute("Id");
            attrRps.Value = "Ass_" + idRPS;

            xmlSignatureRps.Attributes.SetNamedItem(attrRps);
            XmlElement xmlSignedInfoRps = signedXmlRps.SignedInfo.GetXml();
            XmlElement xmlKeyInfoRps = signedXmlRps.KeyInfo.GetXml();
            XmlElement xmlSignatureValueRps = doc.CreateElement("SignatureValue", xmlSignatureRps.NamespaceURI);
            string signBase64Rps = Convert.ToBase64String(signedXmlRps.Signature.SignatureValue);
            XmlText textRps = doc.CreateTextNode(signBase64Rps);
            xmlSignatureValueRps.AppendChild(textRps);

            xmlSignatureRps.AppendChild(doc.ImportNode(xmlSignedInfoRps, true));
            xmlSignatureRps.AppendChild(xmlSignatureValueRps);
            xmlSignatureRps.AppendChild(doc.ImportNode(xmlKeyInfoRps, true));

            XmlNodeList ListRps = doc.GetElementsByTagName("Rps");

            int RpsCounter = 1;

            foreach (XmlElement Rps in ListRps)
            {
                if (RpsCounter == NodeCounter)
                {
                    Rps.AppendChild(xmlSignatureRps);
                }
                RpsCounter++;
            }
            NodeCounter++;
        }


        XmlNodeList ListLoteRps = doc.GetElementsByTagName("LoteRps");

        foreach (XmlElement LoteRps in ListLoteRps)
        {
            string id = LoteRps.Attributes.GetNamedItem("Id").Value;
            SignedXml signedXml = new SignedXml(LoteRps);
            signedXml.SigningKey = certificado.PrivateKey;
            Reference reference = new Reference("#" + id);
            reference.AddTransform(new XmlDsigEnvelopedSignatureTransform());
            reference.AddTransform(new XmlDsigC14NTransform());
            signedXml.AddReference(reference);
            KeyInfo keyInfo = new KeyInfo();
            keyInfo.AddClause(new KeyInfoX509Data(certificado));
            signedXml.KeyInfo = keyInfo;
            signedXml.ComputeSignature();
            XmlElement xmlSignature = doc.CreateElement("Signature", "http://www.w3.org/2000/09/xmldsig#");
            XmlAttribute attr = doc.CreateAttribute("Id");
            attr.Value = "Ass_" + id;
            xmlSignature.Attributes.SetNamedItem(attr);
            XmlElement xmlSignedInfo = signedXml.SignedInfo.GetXml();
            XmlElement xmlKeyInfo = signedXml.KeyInfo.GetXml();
            XmlElement xmlSignatureValue = doc.CreateElement("SignatureValue", xmlSignature.NamespaceURI);
            string signBase64 = Convert.ToBase64String(signedXml.Signature.SignatureValue);
            XmlText text = doc.CreateTextNode(signBase64);
            xmlSignatureValue.AppendChild(text);
            xmlSignature.AppendChild(doc.ImportNode(xmlSignedInfo, true));

            xmlSignature.AppendChild(xmlSignatureValue);

            xmlSignature.AppendChild(doc.ImportNode(xmlKeyInfo, true));

            XmlNodeList ListEnviarLoteRpsEnvio = doc.GetElementsByTagName("GerarNfseEnvio");

            foreach (XmlElement EnviarLoteRpsEnvio in ListEnviarLoteRpsEnvio)
            {
                EnviarLoteRpsEnvio.AppendChild(xmlSignature);
            }

        }
    }