如何使用HtmlAgilityPack提取完整的URL - C#

Install-Package HtmlAgilityPack

using System;
using System.Net.Http;
using HtmlAgilityPack;

namespace HtmlAgilityPackExample
{
    class Program
    {
        static async System.Threading.Tasks.Task Main(string[] args)
        {
            var url = "https://example.com"; // 替换为要提取URL的网站
            var httpClient = new HttpClient();
            var htmlContent = await httpClient.GetStringAsync(url);

            var htmlDocument = new HtmlDocument();
            htmlDocument.LoadHtml(htmlContent);

            var linkNodes = htmlDocument.DocumentNode.SelectNodes("//a[@href]");

            if (linkNodes != null)
            {
                foreach (var linkNode in linkNodes)
                {
                    var link = linkNode.Attributes["href"].Value;
                    Console.WriteLine(link);
                }
            }
        }
    }
}