public async Task <HttpResponseMessage> AjaxPost(string postUrl, object model, string tokengnd)
        {
            HttpResponseMessage response;

            using (var client = new HttpClient())
            {
                client.BaseAddress = new Uri(WebAppConfig.GetConfigValue("WebAPIUrl"));

                client.DefaultRequestHeaders.Add("cache-control", "no-cache");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept",
                                                                     "text/html,application/xhtml+xml,application/xml");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate");
                client.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent",
                                                                     "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Charset", "ISO-8859-1");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", "bearer " + tokengnd);

                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"application/json"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"application/xml"));

                //client.DefaultRequestHeaders.Accept.Add(
                //    new MediaTypeWithQualityHeaderValue(@"application/x-www-form-urlencoded"));

                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"text/json"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"text/x-json"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"text/javascript"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"text/xml"));
                StringContent content = new StringContent(JsonConvert.SerializeObject(model),
                                                          Encoding.UTF8, "application/json");
                response = client.PostAsync(postUrl, content).Result;
                return(response);
            }
        }
        public string AjaxGet(string url, List <KeyValuePair <string, string> > paramList, string tokengnd)
        {
            using (HttpClient client = new HttpClient())
            {
                client.BaseAddress = new Uri(WebAppConfig.GetConfigValue("WebAPIUrl"));

                // Add an Accept header for JSON format.
                client.DefaultRequestHeaders.Add("cache-control", "no-cache");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept",
                                                                     "text/html,application/xhtml+xml,application/xml");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate");
                client.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent",
                                                                     "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Charset", "ISO-8859-1");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", "bearer " + tokengnd);

                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"application/json"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"application/xml"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"text/json"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"text/x-json"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"text/javascript"));
                client.DefaultRequestHeaders.Accept.Add(
                    new MediaTypeWithQualityHeaderValue(@"text/xml"));
                string finalUrl = url;

                if (paramList != null && paramList.Count > 0)
                {
                    StringBuilder sb = new StringBuilder();
                    sb.Append("?");
                    foreach (var param in paramList)
                    {
                        sb.Append(param.Key);
                        sb.Append("=");
                        sb.Append(param.Value);
                        sb.Append("&");
                    }

                    finalUrl = finalUrl + sb.ToString().Substring(0, sb.ToString().Length - 1);
                }


                HttpResponseMessage response = client.GetAsync(finalUrl).Result;

                if (response.StatusCode == HttpStatusCode.Unauthorized)
                {
                    FormsAuthentication.SignOut();
                    return("Unauthorized");
                }
                else
                {
                    if (response.IsSuccessStatusCode)
                    {
                        var rslt = response.Content.ReadAsStringAsync().Result;
                        return(rslt);
                    }
                    else
                    {
                        return(null);
                    }
                }
            }
        }
        public async Task <Token> AjaxPostToken(LoginModel model)
        {
            using (var client = new HttpClient())
            {
                client.BaseAddress = new Uri(WebAppConfig.GetConfigValue("WebAPIUrl"));

                client.DefaultRequestHeaders.Add("cache-control", "no-cache");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept",
                                                                     "text/html,application/xhtml+xml,application/xml");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Encoding", "gzip, deflate");
                client.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent",
                                                                     "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0");
                client.DefaultRequestHeaders.TryAddWithoutValidation("Accept-Charset", "ISO-8859-1");

                client.DefaultRequestHeaders.Accept.Clear();
                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                // HTTP POST
                var body = new List <KeyValuePair <string, string> >
                {
                    new KeyValuePair <string, string>("grant_type", "password"),
                    new KeyValuePair <string, string>("username", model.UserName),
                    new KeyValuePair <string, string>("password", BSSecurityEncryption.Encrypt(model.Password, WebAppConfig.GetConfigValue("BSGnd")))
                };
                var content       = new FormUrlEncodedContent(body);
                var tokenResponse = client.PostAsync("token", content).Result;
                var token         = tokenResponse.Content.ReadAsAsync <Token>(new[] { new JsonMediaTypeFormatter() }).Result;
                return(token);
            }
        }