AanleverService cert

        // Create the binding.
            var myBinding = new WSHttpBinding
                {
                    MaxReceivedMessageSize = 1000000000,
                    ReaderQuotas =
                        {
                            MaxStringContentLength = 5242880,
                            MaxArrayLength = 1000000000
                        },
                    Security =
                        {
                            Mode = SecurityMode.TransportWithMessageCredential,
                            Transport =
                                {
                                    ClientCredentialType = HttpClientCredentialType.Certificate
                                }
                        }
                };

            var ea = new EndpointAddress("https://preprod.procesinfrastructuur.nl/wus/2.0/ophaalservice/1.2");

            using (var cc = new AanleverService_V1_2Client(myBinding, ea))
            {
                // The client must specify a certificate trusted by the server.
                cc.ClientCredentials.ClientCertificate.SetCertificate(
                    StoreLocation.CurrentUser,
                    StoreName.My,
                    X509FindType.FindBySubjectName,
                    "cert.skillsource.nl");

                return Content(cc.aanleveren(new aanleverRequest()).statuscode);
            }