我如何获取C＃来从网站获取所有URL并将其放入列表中

Question

所以我试图获取C＃代码以从网站中选择随机图像，但我不知道如何获取该程序以获取图像URL

我已经尝试过this thread上的代码，但似乎可以使它工作

private List<string> retrieveImages()
{
  List<string> imgList = new List<string>();
  HtmlDocument doc = new HtmlDocument();
  doc.Load("file.htm"); //or whatever HTML file you have
  HtmlNodeCollection imgs = doc.DocumentNode.SelectNodes("//img[@src]");
  if (imgs == null) return new List<string>();

  foreach (HtmlNode img in imgs)
  {
   if (img.Attributes["src"] == null)
      continue;
   HtmlAttribute src = img.Attributes["src"];

   imgList.Add(src.Value);
   //Do something with src.Value such as Get the image and save it locally
   // Image img = GetImage(src.Value)
   // img.Save(aLocalFilePath);
  }
return imgList;
}

private Image GetImage(string url)
{
    System.Net.WebRequest request = System.Net.WebRequest.Create(url);

    System.Net.WebResponse response = request.GetResponse();
    System.IO.Stream responseStream = response.GetResponseStream();

    Bitmap bmp = new Bitmap(responseStream);

    responseStream.Dispose();

    return bmp;
}

程序关闭无错误