POST data to web service HttpWebRequest Windows Phone 8 - windows-phone-8

Question

I've been trying without success today to adapt this example to POST data instead of the example GET that is provided.
http://blogs.msdn.com/b/andy_wigley/archive/2013/02/07/async-and-await-for-http-networking-on-windows-phone.aspx
I've replaced the line:
request.Method = HttpMethod.Get;
With
request.Method = HttpMethod.Post;
But can find no Method that will allow me to stream in the content I wish to POST.
This HttpWebRequest seems a lot cleaner than other ways e.g. sending delegate functions to handle the response.
In Mr Wigley's example code I can see POST so it must be possible
public static class HttpMethod
{
public static string Head { get { return "HEAD"; } }
public static string Post { get { return "POST"; } }

Answer 1

I wrote this class some time ago
public class JsonSend<I, O>
{
bool _parseOutput;
bool _throwExceptionOnFailure;
public JsonSend()
: this(true,true)
{
}
public JsonSend(bool parseOutput, bool throwExceptionOnFailure)
{
_parseOutput = parseOutput;
_throwExceptionOnFailure = throwExceptionOnFailure;
}
public async Task<O> DoPostRequest(string url, I input)
{
var client = new HttpClient();
CultureInfo ci = new CultureInfo(Windows.System.UserProfile.GlobalizationPreferences.Languages[0]);
client.DefaultRequestHeaders.Add("Accept-Language", ci.TwoLetterISOLanguageName);
var uri = new Uri(string.Format(
url,
"action",
"post",
DateTime.Now.Ticks
));
string serialized = JsonConvert.SerializeObject(input);
StringContent stringContent = new StringContent(
serialized,
Encoding.UTF8,
"application/json");
var response = client.PostAsync(uri, stringContent);
HttpResponseMessage x = await response;
HttpContent requestContent = x.Content;
string jsonContent = requestContent.ReadAsStringAsync().Result;
if (x.IsSuccessStatusCode == false && _throwExceptionOnFailure)
{
throw new Exception(url + " with POST ends with status code " + x.StatusCode + " and content " + jsonContent);
}
if (_parseOutput == false){
return default(O);
}
return JsonConvert.DeserializeObject<O>(jsonContent);
}
public async Task<O> DoPutRequest(string url, I input)
{
var client = new HttpClient();
CultureInfo ci = new CultureInfo(Windows.System.UserProfile.GlobalizationPreferences.Languages[0]);
client.DefaultRequestHeaders.Add("Accept-Language", ci.TwoLetterISOLanguageName);
var uri = new Uri(string.Format(
url,
"action",
"put",
DateTime.Now.Ticks
));
string serializedObject = JsonConvert.SerializeObject(input);
var response = client.PutAsync(uri,
new StringContent(
serializedObject,
Encoding.UTF8,
"application/json"));
HttpResponseMessage x = await response;
HttpContent requestContent = x.Content;
string jsonContent = requestContent.ReadAsStringAsync().Result;
if (x.IsSuccessStatusCode == false && _throwExceptionOnFailure)
{
throw new Exception(url + " with PUT ends with status code " + x.StatusCode + " and content " + jsonContent);
}
if (_parseOutput == false){
return default(O);
}
return JsonConvert.DeserializeObject<O>(jsonContent);
}
}
Then when I want to call it, I can use it as following :
JsonSend<User, RegistrationReceived> register = new JsonSend<User, RegistrationReceived>();
RegistrationReceived responseUser = await register.DoPostRequest("http://myurl", user);