Using HttpClient to post JSON to a web api webservice

Use HttpClient.PostAsync() to post a JObject

Create an HttpClient in an async method. Set the base url.

Create a JObject and set the values to pass to the webservice.

Call PostAsync() passing the JObject as JSON.

Parse the response using dynamics.

using (var client = new HttpClient())
{
  client.BaseAddress = new Uri("baseurl");

  var data = JObject.FromObject(new
  {
    name = "some value",
    version = new {type = "some value", ver = 2}
  });

  var response = client.PostAsync("/urlpath",
                                  new StringContent(JsonConvert.SerializeObject(data),
                                  Encoding.UTF8, "application/json")).Result;

  response.EnsureSuccessStatusCode();

  var responseContent = await response.Content.ReadAsStringAsync();

  dynamic json = JsonConvert.DeserializeObject(responseContent);
  dynamic r = json.result;

  result = r.someproperty.ToString().Equals("resultdata");

}

Using HttpClient to post JSON to a web api webservice

Set the query string and post content to a web api webservice.