1.8 API Usage from .NET Application by HttpClient

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To get access token from .net application you can use following example. After getting access token, you can use the token on your requests.
Note: You can also use, Webclient and Restclient (easy) if you prefer.

string clientId = “yourclientId”;
string clientSecret = “yourClientSecret”;
string baseUrl = “http://your server base url for example: http://myxiboserver.com”;

private static async Task<string> GetAccessToken()
        {
            using (var client = new HttpClient())
            {
                client.BaseAddress = new Uri(baseUrl);
                // We want the response to be JSON.
                client.DefaultRequestHeaders.Accept.Clear();
                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                // You must provide one Authorization method. No need any value, but must have a method. Othervise you will get 404 page not found error.
                client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic");
                // Build up the data to POST.
                List<KeyValuePair<string, string>> postData = new List<KeyValuePair<string, string>>();
                postData.Add(new KeyValuePair<string, string>("grant_type", "client_credentials"));
                postData.Add(new KeyValuePair<string, string>("client_id", clientId));
                postData.Add(new KeyValuePair<string, string>("client_secret", clientSecret));
                FormUrlEncodedContent content = new FormUrlEncodedContent(postData);

                // Post to the Server and parse the response.
                HttpResponseMessage response = await client.PostAsync("/api/authorize/access_token", content);
                string jsonString = await response.Content.ReadAsStringAsync();
                object responseData = JsonConvert.DeserializeObject(jsonString);

                // return the Access Token.
                return ((dynamic)responseData).access_token;
            }
        }
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