IEnumerable<Transaccion> transaccion = null;

            using (var client = new HttpClient())
            {
                client.BaseAddress = new Uri(Baseurl);
                //HTTP GET
                var responseTask = client.GetAsync("Usuario/" + id + "/Transacciones");
                responseTask.Wait();

                var result = responseTask.Result;
                if (result.IsSuccessStatusCode)
                {
                    var readTask = result.Content.ReadAsAsync<IList<Transaccion>>();
                    readTask.Wait();

                    transaccion = readTask.Result;
                }
                else //web api sent error response
                {
                    //log response status here..

                    transaccion = Enumerable.Empty<Transaccion>();

                    ModelState.AddModelError(string.Empty, "Server error. Please contact administrator.");
                }