c# - System.Net.Http.Formatting 的 PostAsJsonAsync 在 Xamarin PCL 上抛出 System.NotImplementedException

Question

HttpClient client = new HttpClient();
            client.BaseAddress = uri;
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

HttpResponseMessage response = client.PostAsJsonAsync(route, requestResource).Result;

不使用 Xamarin PCL 并导致此错误:

ex = {System.TypeInitializationException: The type initializer for 'System.Net.Http.FormattingUtilities' threw an exception. ---> System.NotImplementedException: The method or operation is not implemented.
  at System.Runtime.Serialization.XsdDataContractExporte...

Answer 1

老实说，我没有使用过那个方法，但它没有实现，所以也没什么可做的。

虽然你可以这样发帖

var request = new HttpRequestMessage(HttpMethod.Post, route);
var hc = new StringContent(requestResource); // requestResource should be a string
hc.Headers.ContentType = new MediaTypeHeaderValue("application/json);
request.Content = hc;
var response = await httpClient.SendAsync(request);