在c#中检索网页html内容

using System;
using System.Net.Http;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        using (HttpClient client = new HttpClient())
        {
            HttpResponseMessage response = await client.GetAsync("https://www.example.com");
            response.EnsureSuccessStatusCode();
            string htmlContent = await response.Content.ReadAsStringAsync();
            Console.WriteLine(htmlContent);
        }
    }
}

using System;
using HtmlAgilityPack;

class Program
{
    static void Main(string[] args)
    {
        HtmlWeb web = new HtmlWeb();
        HtmlDocument document = web.Load("https://www.example.com");
        HtmlNodeCollection nodes = document.DocumentNode.SelectNodes("//div[@class='content']");
        
        if (nodes != null)
        {
            foreach (HtmlNode node in nodes)
            {
                Console.WriteLine(node.InnerHtml);
            }
        }
    }
}