HTTP Get request in C# v 1.0 - WebScrapping

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net.Http;
using HtmlAgilityPack;

namespace WebScrapping
{
    public partial class frmHttp : Form
    {
        public class NamesAndScores
        {
            public string Title { get; set; }
            public string Paragraph { get; set; }
        }

        DataTable table;
        HtmlWeb web = new HtmlWeb();

        public frmHttp()
        {
            InitializeComponent();
            InitialTable();
        }

        private async Task<List<NamesAndScores>> GetInfo(int pageNum)
        {
            string url = "https://www.hespress.com/politique/";
            if (pageNum != 0)
                url = "https://www.hespress.com/politique/index." + pageNum.ToString() + ".html";
            var doc = await Task.Factory.StartNew(() => web.Load(url));
            var titleNodes = doc.DocumentNode.SelectNodes("//*[@id='box_center_holder']/div[6]/div/h2/a");
            var paragraphNodes = doc.DocumentNode.SelectNodes("//*[@id='box_center_holder']/div[4]/div/p");
            if (titleNodes == null || paragraphNodes == null)
                return new List<NamesAndScores>();

            var titles = titleNodes.Select(node => node.InnerText.Replace("&quot;", "\""));
            var paragraphes = paragraphNodes.Select(node => node.InnerText.Replace("&quot;", "\"").Replace("&nbsp;", Environment.NewLine));
            return titles.Zip(paragraphes, (title, paragraph) => new NamesAndScores() { Title = title, Paragraph = paragraph }).ToList();
        }

        private async void btnGet_Click(object sender, EventArgs e)
        {
            try
            {
                this.Cursor = Cursors.WaitCursor;
                btnGet.Enabled = false;
                int pageNum = 0;
                var getinfos = await GetInfo(pageNum);
                while (getinfos.Count > 0)
                {
                    foreach (var getinfo in getinfos)
                        table.Rows.Add(getinfo.Title, getinfo.Paragraph);
                    pageNum++;
                    getinfos = await GetInfo(pageNum);
                }
                this.Cursor = Cursors.Hand;
                btnGet.Enabled = true;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

        private void InitialTable()
        {
            table = new DataTable("MyTable");
            table.Columns.Add("Title of article", typeof(string));
            table.Columns.Add("Excerpt from the article", typeof(string));
            dataGridView1.DataSource = table;
        }

        private void btnExample_Click(object sender, EventArgs e)
        {
            ExampleWebScrapping webScraper = new ExampleWebScrapping();
            webScraper.ShowDialog();
        }
    }
}