How to resolve the Csharp_eidmw_err_pinref_not_found_get exception

Question

I have a C# project that uses the Gov library to access data from a smartcard (citizen card), the Library is called pteidlib_dotnet, which you can find here

I need to create a feature that allows me to digitally sign pdf documents with the Citizen Card, and I think I have the correct code (as it is in the manual that comes with libraries, which can find here in pdf), the problem now, is that when I try to sign the library throws an exception which I can’t find the solution on the internet to solve.

I’ve done a lot of research and I think the problem is related to the init method library that does not recognize the name of my smartcard Reader, but still can not solve (init function I think is called internally, so in my code I do not call it.)

I wanted to come here so ask for help if anyone knows why the exception.

Inner Exception - in en.portugal.Eid.pteidlib_dotNetPINVOKE.SWIGExceptionHelper.. ctor() in en.portugal.Eid.pteidlib_dotNetPINVOKE.. cctor()

Message - The type initializer for en.portugal.Eid.pteidlib_dotNetPINVOKE triggered an exception.

Stacktrace - in en.portugal.Eid.pteidlib_dotNetPINVOKE.Pteid_readerset_instance() in en.portugal.Eid.Pteid_readerset.instance()

Code:

private static void AssinarFicheiros(string[] ficheiros)
{
    ficheiros[0] = @"c:\teste\fich1.pdf";
    //ficheiros[1] = @"c:\teste\fich2.pdf";
    if (ficheiros is null)
        return;

    string destino = Directory.GetCurrentDirectory() + @"\ficheiros_assinados.zip";

    string localizacao = "local";
    string razao = "razao";
    int pagina = 1;
    int sector = 2;
    bool isLandscape = false; // TODO: Pode não estar correcto para todos os casos, visto que não conseguimos indentificar se os documentos estão na horizontal.

    try
    {
        using (PTEID_ReaderSet readerSet = PTEID_ReaderSet.instance())
        {
            for (int i = 0; i < readerSet.readerCount(); i++)
            {
                using (PTEID_ReaderContext context = readerSet.getReaderByNum(unchecked((uint)i)))
                {
                    if (context.isCardPresent())
                    {
                        using (PTEID_EIDCard card = context.getEIDCard())
                        {
                            using (PTEID_PDFSignature signature = new PTEID_PDFSignature())
                            {
                                if (ficheiros.Length == 1)
                                {
                                    signature.addToBatchSigning(@"c:\teste\fich1.pdf");
                                    signature.enableSmallSignatureFormat();
                                    signature.enableTimestamp();

                                    // Aqui lança a exceção CSharp_EIDMW_ERR_PINREF_NOT_FOUND_get quando tenta executar esta linha de código.
                                    card.SignPDF(signature, pagina, sector, isLandscape, localizacao, razao, destino);
                                }
                                else
                                {
                                    //card.SignPDF(destino, ficheiros, unchecked((uint)ficheiros.Length));
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    catch (Exception exc)
    {
        MessageBox.Show(exc.ToString());
    }
}

If anyone can guide me in the direction where I can find the solution it would help enough.

Thank you in advance for any reply.

Answer 1

In this case, the error is found in the documentation, and the solution found was only the removal of the extension from the target file, as the destination needs to be a folder!!!