using System;

using System.IO;

using System.Net;

​

namespace Azure_Sentiment_Analysis

{

    class Program

    {

        static void Main(string[] args)

        {

            //accessKey retrieved from cognitive service created in azure.

            string accessKey = "***";

            string uri = "https://westcentralus.api.cognitive.microsoft.com/text/analytics/v2.1/sentiment";

            string comment = "Today is a good day";

            string json = "{\r\n \"documents\": [\r\n {\r\n \"language\": \"en\",\r\n \"id\": \"1\",\r\n \"text\": " + comment + "\"\r\n }]\r\n }";

            Program program = new Program();

            string score = program.EvaluateResult(uri, json, accessKey);

            Console.WriteLine(score);

        }

​

        private string EvaluateResult(string URI, string body, string key)

        {

            Uri uri = new Uri(string.Format(URI));

​

            // Create the request

            var httpWebRequest = (HttpWebRequest)WebRequest.Create(uri);

            httpWebRequest.Headers.Add("Ocp-Apim-Subscription-Key", key);

            httpWebRequest.ContentType = "application/json";

            httpWebRequest.Method = "POST";

​

            try

            {

                using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))

                {

                    streamWriter.Write(body);

                    streamWriter.Flush();

                    streamWriter.Close();

                }

            }

            catch (Exception ex)

            {

                Console.WriteLine("Error setting up stream writer: " + ex.Message);

            }

​

            // Get the response

            HttpWebResponse httpResponse = null;

            try

            {

                httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Error from : " + uri + ": " + ex.Message);

                return null;

            }

​

            string result = null;

            using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))

            {

                result = streamReader.ReadToEnd();

            }

​

            return result;

        }

    }

}

​