TextAnalysisSample.cs

using System;
using System.Configuration;
using Microsoft.ProjectOxford.Text.Sentiment;
using System.Xml;
using System.ServiceModel.Syndication;
using System.Collections.Generic;
using System.Linq;

namespace TextAnalysis
{
    static class Program
    {
        static void Main()
        {
            GetSentiment(GetRssFeed("http://www.nu.nl/rss"));
            Console.ReadLine();
        }

        /// <summary>
        /// Takes 10 items from given feed
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        private static List<SyndicationItem> GetRssFeed(string url)
        {
            XmlReader reader = XmlReader.Create(url);
            SyndicationFeed feed = SyndicationFeed.Load(reader);
            reader.Close();
            return feed.Items.Take(10).ToList();
        }

        /// <summary>
        /// Request sentiment analysis in Dutch for feeditems
        /// </summary>
        /// <param name="feedItems"></param>
        static async void GetSentiment(List<SyndicationItem> feedItems)
        {
            var request = new SentimentRequest();
            foreach(var item in feedItems)
            {
                request.Documents.Add(new SentimentDocument()
                {
                    Id = item.Id,
                    Text = $"{item.Title.Text} {item.Summary.Text}",
                    Language = "nl"
                });
            }

            var client = new SentimentClient(<Insert API key here>);

            var response = await client.GetSentimentAsync(request);

            foreach (var doc in response.Documents)
            {
                Console.WriteLine($"   News item: {feedItems.First(f => f.Id == doc.Id).Title.Text}");
                Console.WriteLine($"   Scores: {doc.Score * 100}%");
                Console.WriteLine("");
            }
        }
    }
}