public ActionResult AllowonlyforAuthorize()
        {
            var baseurl = string.Empty;
            baseurl = "http://localhost:59233/";
            Dictionary tokendetails = null;
            HttpClient objclient = new HttpClient();
            objclient.BaseAddress= new Uri(baseurl);  //THIS IS AUTHENTICATION SERVER FOR EG:-IN INDIA,JAPAN,US,UK,CHINA.
            // SO I need TO GET TOKEN FROM THEM
            //for that I NEED TO PASS USERNAME,PASSWORD AND GRANTTYPE AS PARAMETER TO AUTHORIZATION SERVER.
            var logincredentials = new Dictionary
            {
                {"username","admin" },
                {"password","admin" },
                {"grant_type","password"}
            };
            var response = objclient.PostAsync("token", new FormUrlEncodedContent(logincredentials)).Result;
            //IF PROPER TOKEN IS RECEIVED THEN ISSUCCESSSTATUSCODE returns TRUE
            if(response.IsSuccessStatusCode)
            {
                //HERE YOU ARE READING THE RESPONSE AND DESERIALIZE TO OBJECT AND STORE IT IN DICTIONARY
                tokendetails = JsonConvert.DeserializeObject>(response.Content.ReadAsStringAsync().Result);
                if (tokendetails !=null && tokendetails.Any())
                {
                    var tokenno = tokendetails.FirstOrDefault().Value;
                    //Authorization header is passed with bearer token to AUTHORIZATION SERVER
                    objclient.DefaultRequestHeaders.Add("Authorization", "Bearer " + tokenno);
                    var postsyncresult = objclient.GetAsync(baseurl + "api/sampleAPIdata/onlyforauthenticateusers");
                    var finalresult =  postsyncresult.Result.Content.ReadAsStringAsync().Result;
                    ViewBag.displayonlyforauthorizedusers = finalresult;
                    return View("allowonlyforauthorize");
                }
            }
            return View("Index");
        }