I added a service from a wsdl in the connected services through "Microsoft WCF Web Service Reference Provider"

It generated all the classes correctly. Now I want to consume this service when I access a api controller at a certain endpoint.

This is the interface of the service that will be called, it has an implementation as well called "SyncRequestPortChannel" which is too long to include here

[System.CodeDom.Compiler.GeneratedCodeAttribute("dotnet-svcutil", "1.0.0.1")]

[System.ServiceModel.ServiceContractAttribute(Namespace="http://www.megatravel.xyz/XMLSchemaSoap", ConfigurationName="SyncReservations.SyncRequestPort")]

public interface SyncRequestPort

{

[System.ServiceModel.OperationContractAttribute(Action="", ReplyAction="*")]

[System.ServiceModel.XmlSerializerFormatAttribute(SupportFaults=true)]

System.Threading.Tasks.Task<SyncReservations.syncResponse1> syncAsync(SyncReservations.syncRequest1 request);

}

​

In Startup.cs I addded this

​

public void ConfigureServices(IServiceCollection services)

{

services.Configure<CookiePolicyOptions>(options =>

{

// This lambda determines whether user consent for non-essential cookies is needed for a given request.

options.CheckConsentNeeded = context => true;

options.MinimumSameSitePolicy = SameSiteMode.None;

});

services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);

// Instanciranje servisa pri pokretanju aplikacije

services.TryAddSingleton<IHelloWorldService, HelloWorldService>();

//

services.AddScoped<SyncRequestPort, SyncRequestPortClient>();

}

​

And finally in my controller I referenced the SyncRequestPort interface hoping to get the implementation SyncRequestPortClient, however I got a NullReferenceException, the _client isn't instantiated

​

[Route("api/[controller]")]

[ApiController]

public class ReservationController : ControllerBase

{

private SyncRequestPort _client;

// GET: api/Reservation

[HttpGet]

public IEnumerable<SyncReservations.reservation> Get()

{

Task<syncResponse1> response = _client.syncAsync(new syncRequest1());

return response.Result.syncResponse.reservations;

}

​

What is the problem with this code? I have searched everywhere for a solution, please help