postrequest.cs

/// <summary>
/// Post for a REST api
/// </summary>
/// <param name="token">authorization token</param>
/// <param name="url">REST url for the resource</param>
/// <param name="content">content</param>
/// <returns>response from the rest url</returns>
public async Task<JObject> PostAsync(string token, string url, string content)
{
   byte[] data = Encoding.UTF8.GetBytes(content);
   WebRequest request = WebRequest.Create(url);
   request.Method = "POST";
   request.ContentType = "application/json";
   request.Headers.Add("Authorization", "Bearer " + token);
   request.ContentLength = data.Length;

   using (Stream stream = request.GetRequestStream())
   {
       stream.Write(data, 0, data.Length);
   }

   try
   {
       WebResponse response = await request.GetResponseAsync();
       using (StreamReader reader = new StreamReader(response.GetResponseStream()))
       {
           string responseContent = reader.ReadToEnd();
           JObject adResponse =
               Newtonsoft.Json.JsonConvert.DeserializeObject<JObject>(responseContent);
           return adResponse;
       }
   }
   catch (WebException webException)
   {
       if (webException.Response != null)
       {
           using (StreamReader reader = new StreamReader(webException.Response.GetResponseStream()))
           {
               string responseContent = reader.ReadToEnd();
               return Newtonsoft.Json.JsonConvert.DeserializeObject<JObject>(responseContent); ;
           }
       }
   }

   return null;
}