Error picking web service return variable

Question

I have a variable that I return that is of the type x509Certificate2, But once you get back into the system, it always comes null, but from the webserver, it returns perfectly, I’m not sure how to convert. I created a class with the same name, and the same variable, and I do so:

 ResultadoCert a = new ResultadoCert(); 
                    a.Certificado = (await client.CertificadoAsync(item.Serial));

It returns the following error:

Cannot convert type implicitly "Servicereference1.Resultadocert" in "System.Security.Cryptography.X509certificates.X509certificate2"

How can I fix it? I have tried to collect on var, and pass to x509Certificate2 but he comes null

EDIT

That’s the class to receive, I changed a little now:

public class ResultadoCert {
    [IgnoreDataMember]
    public X509Certificate2 Certificado { get; set; }
}

And here’s what I return from webservice

 public ResultadoCert Certificado(string serial)
    {
        ResultadoCert resultado = new ResultadoCert();
        X509Certificate2Collection collection = Certificados.SelecionarCertificado(serial);

        if (collection.Count == 1)
        {
            resultado.Certificado = collection[0];
            resultado.Result = true;
            return resultado;
        }
        else { resultado.Result = false; resultado.Certificado = null; return resultado; }
    }

Here’s how I’m trying to get paid:

 ResultadoCert a = new ResultadoCert();
                    var cert = await client.CertificadoAsync(item.Serial);
                    if (cert.Result)
                    {
                        a.Certificado = cert.Certificado;
                        //a.Certificado = client.CertificadoAsync(item.Serial).Result.Certificado;
                    }

Debugging in webservice, it returns correctly, but when I pass the feedback I’m having problems.

Answer 1

@marianac_costa, there on your Return of the Web Service, you see that your return is Resultadocert then, there would be no way you could assign directly to your object a.Certificado, because it’s the same as you force your Certificado turn into a ResultadoCert.

To fix this, you should change the Return of its method in the Service, or return the Resultadocert even. It would look like this:

Returning to Resultadocert

public Task<ResultadoCert> Certificado(string serial)
{
        ResultadoCert resultado = new ResultadoCert();
        X509Certificate2Collection collection = 
        Certificados.SelecionarCertificado(serial);

        if (collection.Count == 1)
        {
            resultado.Certificado = collection[0];
            resultado.Result = true;
            return resultado;
        }
        else 
        { 
          resultado.Result = false; resultado.Certificado = null; 
          return resultado; 
        }
}

Obs: Note that I added the Task<Objeto>, this would solve the problem of being returning nullwhen the variable is of the type var(that you had commented).

Service Call (Returning Resultadocert)

ResultadoCert a = new ResultadoCert();
var resultadoCertoRetornado = await client.CertificadoAsync(item.Serial);
if (resultadoCertoRetornado.Certificado.Result)
{
    a.Certificado = await resultadoCertoRetornado.Certificado;
}

Returning Certificate

public Task<Certificado> Certificado(string serial)
    {
            ResultadoCert resultado = new ResultadoCert();
            X509Certificate2Collection collection = 
            Certificados.SelecionarCertificado(serial);

            if (collection.Count == 1)
            {
                return collection[0];
            }
            else 
            { 
              return null; 
            }
    }

Service Call (Returning Certificate)

ResultadoCert a = new ResultadoCert();

var certificadoRetornadaService = await client.CertificadoAsync(item.Serial);
if (certificadoRetornadaService.IsNotNull())
{
        a.Certificado = await certificadoRetornadaService;
}