string result = string.Empty;

                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(new Uri(requesturl));

                request.Method = method;

                request.ContentType = "application/json";

                request.Headers["Authorization"] = AuthStr;

                if (!string.IsNullOrWhiteSpace(jsonstr))

                {

                    using (var requestStream = await request.GetRequestStreamAsync())

                    {

                        var writer = new StreamWriter(requestStream);

                        writer.Write(jsonstr);

                        writer.Flush();

                    }

                }

                using (var resp = await request.GetResponseAsync())

                {

                    using (var responseStream = resp.GetResponseStream())

                    {

                        var reader = new StreamReader(responseStream);

                        result = reader.ReadToEnd();

                    }

                }

                return result;

 System.Net.Http.HttpClient client = new System.Net.Http.HttpClient();

                client.DefaultRequestHeaders.Authorization =

                    new AuthenticationHeaderValue("Bearer",AuthStr);

                HttpContent content = new StringContent(jsonstr,Encoding.UTF8);

                content.Headers.ContentType.CharSet = null;

                content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/json");

                System.Net.Http.HttpResponseMessage response = await client.PutAsync(new Uri(requesturl), content);

                response.EnsureSuccessStatusCode();

                string responseBody = System.Text.RegularExpressions.Regex.Unescape(await response.Content.ReadAsStringAsync());

                return responseBody;