ASP.NET Core 5 httpclient using xml

Question

What is the preferred way to use httpClient with XML to make a post & get call?

public class ShippingService : IShippingService
{
    private readonly HttpClient _httpClient;
    private readonly string _remoteServiceBaseUrl;

    public CatalogService(HttpClient httpClient)
    {
        _httpClient = httpClient;
    }

    public async Task<List<ShippingPrice>> GetShippingPrices()
    {
         // httpClient post using xml format
    }
}

Answer 1

Check it:

   HttpClient _httpClient = new HttpClient();
   string xml = ""; //serialize your object
   var content = new StringContent(xml, Encoding.UTF8, "application/xml");
   await _httpClient.PostAsync("http://example.com/api",content);

for serialize object to xml see this: XML Serialize generic list of serializable objects