public async Task <IActionResult> PutRegistration(int id, Domain.Registration registration)
        {
            if (id != registration.RegistrationId)
            {
                return(BadRequest());
            }

            if (await _registrationService.RegistrationExists(id) == false)
            {
                return(NotFound());
            }

            throw new NotImplementedException();
        }
 public async Task <ActionResult <Domain.Registration> > PostRegistration(Domain.Registration registration)
 {
     throw new NotImplementedException();
     // return CreatedAtAction("GetRegistration", new { id = registration.RegistrationId }, registration);
 }
 public MainPage()
 {
     InitializeComponent();
     _registration = new Domain.Registration();
 }