private String HttpExecution(string uri, string body) { string url = GetApiUrl() + uri; //log.LogText(url); HttpClient client = new HttpClient(); client.BaseAddress = new Uri(url); client.DefaultRequestHeaders.Add("TOKEN", "12345"); client.DefaultRequestHeaders.Add("KEY", "012ea63f-7046-45c3-a0f9-cec86e05d104"); client.DefaultRequestHeaders.Add("TITLE", "ZIMS-Application"); client.DefaultRequestHeaders.UserAgent.ParseAdd("Mozilla/5.0 (Windows NT x.y; rv:10.0) Gecko/20100101 Firefox/10.0"); client.DefaultRequestHeaders .Accept .Add(new MediaTypeWithQualityHeaderValue("application/json")); //ACCEPT header HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Post, url); request.Content = new StringContent(body, Encoding.UTF8, "application/json");//CONTENT-TYPE header HttpResponseMessage response = null; try { response = client.SendAsync(request).Result; } catch (HttpRequestException hre) { log.LogText("API ERROR: " + hre.ToString()); } catch (ArgumentNullException ane) { log.LogText("API ERROR: " + ane.ToString()); } catch (InvalidOperationException ioe) { log.LogText("API ERROR: " + ioe.ToString()); } catch (AggregateException ae) { log.LogText("API ERROR: " + ae.ToString()); } catch (Exception ex) { log.LogText("API ERROR: " + ex.ToString()); } if (response == null) { log.LogText("API ERROR: Null response from API."); if (ui.isLoggingUI) { ui.LblNetStatusChangeSafe("Error - " + uri, Color.Red); } return(""); } else if (response.StatusCode == HttpStatusCode.OK) { //log.LogText("API OK"); if (ui.isLoggingUI) { ui.LblNetStatusChangeSafe("Online - " + uri, Color.Green); } } else //if (response.StatusCode != HttpStatusCode.OK) { log.LogText("API ERROR: " + response.ReasonPhrase.ToString()); if (ui.isLoggingUI) { ui.LblNetStatusChangeSafe("Error - " + uri, Color.Red); } return(""); } //MessageBox.Show(response.ReasonPhrase.ToString()); return(response.Content.ReadAsStringAsync().Result); }