如何使用WebRequest和/或HTML Agility Pack获取内容配置附件中的文件

using System.Net;
using HtmlAgilityPack;

WebRequest request = WebRequest.Create("文件的URL地址");

WebResponse response = request.GetResponse();

Stream stream = response.GetResponseStream();

HtmlDocument doc = new HtmlDocument();
doc.Load(stream);

HtmlNodeCollection nodes = doc.DocumentNode.SelectNodes("//标签名");

foreach (HtmlNode node in nodes)
{
    string content = node.InnerText;
    // 其他操作
}