public async Task <IActionResult> Details(int Id)
        {
            var                 contragent = new ContragentsData();
            HttpClient          client     = _api.Initial();
            HttpResponseMessage res        = await client.GetAsync($"api/contragents/{Id}");

            if (res.IsSuccessStatusCode)
            {
                var result = res.Content.ReadAsStringAsync().Result;
                contragent = JsonConvert.DeserializeObject <ContragentsData>(result);
            }
            return(View(contragent));
        }
        public IActionResult Create(ContragentsData contragentsData)
        {
            HttpClient client = _api.Initial();

            var postTask = client.PostAsJsonAsync <ContragentsData>("api/contragents", contragentsData);

            postTask.Wait();
            var result = postTask.Result;

            if (result.IsSuccessStatusCode)
            {
                return(RedirectToAction("Index"));
            }

            return(View());
        }