Call web api with basic authentication in C#

HttpClient client = new HttpClient();

                string authInfo = "raj" + ":" + "34sddff";
                authInfo = Convert.ToBase64String(Encoding.Default.GetBytes(authInfo));
                client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", authInfo);

                client.BaseAddress = new Uri("http://sample");

                HttpResponseMessage response = client.GetAsync(url).ContinueWith(task => task.Result).Result;
                    // Parse the response body. Blocking!
                    if (response.IsSuccessStatusCode)
                    {
                        var httpResponseResult = response.Content.ReadAsStringAsync().ContinueWith(task => task.Result).Result;
                        var data = JObject.Parse(httpResponseResult);
                        var responseCode= data.SelectToken("code").Value();
                        var message = data.SelectToken("message").Value();
                    }