regisdiogo

public class Startup
{
  public IServiceProvider ConfigureServices(IServiceCollection services)
  {
    services.AddMvc().AddJsonOptions(options =>
    {
      options.SerializerSettings.Converters.Add(new Newtonsoft.Json.Converters.StringEnumConverter());
      options.SerializerSettings.NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore;
    });
  }

Bouke

public class StringDecimalConverter : JsonConverter
{
    public override bool CanRead
    {
        get
        {
            return false;
        }
    }