我有以下几种方法来收集汽车:

public async Task<IEnumerable<Car>> GetCars(object car, CancellationToken ct)
{
      var uri = new Uri($"{_webApiUrl}Car/GetCars");
      using (var httpClient = new HttpClient())
      {
          HttpContent content = new StringContent(JsonConvert.SerializeObject(car), Encoding.UTF8, "application/json");
          var req = await httpClient.PostAsync(uri, content, ct);
          var response = await req.Content.ReadAsStringAsync();
          return JsonConvert.DeserializeObject<IEnumerable<Car>>(response);
       }
}

在controller中的服务api中，我有以下内容:

[HttpPost]
[Route("api/[controller]/[action]")]
public IActionResult GetBottleTypeById(Car car)
{
     return Ok(_carQuery.GetCars(car));
}

这两件事都很好--没有问题。

现在我需要保存，并且不需要返回什么（最终我可以返回true或false，不管它是否成功）。问题是我不确定应该是什么样子，如果我这样做，它会显示:

[HttpPost]
[Route("api/[controller]/[action]")]
public IActionResult UpdateOperation(Car car)
{
      _carRepository.UpdateOperation(car) //UpdateOperation is void with try/catch - throw;
}

与相同，应该如何实现？

public async Task UpdateCar(Car selectedCar, CancellationToken ct)
{
       var uri = new Uri($"{_webApiUrl}Car/UpdateOperation");
       using (var httpClient = new HttpClient())
       {
           HttpContent content = new StringContent(JsonConvert.SerializeObject(selectedCar), Encoding.UTF8, "application/json");
           var req = await httpClient.PostAsync(uri, content, ct);
           var response = await req.Content.ReadAsStringAsync();
           return JsonConvert.DeserializeObject<IEnumerable<Car>>(response);
       }
}

我怎样才能把这两件事都准备好呢？