Geek asks and answers

YouTube Agility Pack C #

I am trying to retrieve all the video ids from the YouTube search results page.

Each result has the following code:

<a href="/watch?v=aYIC-ebAD3o" class="ux-thumb-wrap result-item-thumb">
  <span class="video-thumb ux-thumb-128 ">
    <span class="clip">
      <img onload="tn_load(5)" alt="Thumbnail" src="//i2.ytimg.com/vi/aYIC-ebAD3o/default.jpg" >
    </span>
  </span>
  <span class="video-time">4:16</span>
  <span dir="ltr" class="yt-uix-button-group addto-container short video-actions" data-video-ids="aYIC-ebAD3o" data-feature="thumbnail">
    <button type="button" class="start master-sprite  yt-uix-button yt-uix-button-short yt-uix-tooltip" onclick=";return false;" title="" data-button-action="yt.www.addtomenu.add" role="button" aria-pressed="false">
      <img class="yt-uix-button-icon yt-uix-button-icon-addto" src="//s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif" alt="">
        <span class="yt-uix-button-content">
          <span class="addto-label">Add to</span>
        </span>
    </button>
    <button type="button" class="end  yt-uix-button yt-uix-button-short yt-uix-tooltip yt-uix-button-empty" onclick=";return false;" title="" data-button-menu-id="shared-addto-menu" data-button-action="yt.www.addtomenu.load" role="button" aria-pressed="false">
      <img class="yt-uix-button-arrow" src="//s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif" alt="">
    </button>
  </span>
  <span class="video-in-quicklist">Added to queue    </span>
</a>
<div class="result-item-main-content">

And I'm trying to parse data of the data-video-ids class. What is the best way to do this with the HTML Agility Pack ?

I tried this:

foreach(HtmlNode node in doc.DocumentNode.
    SelectNodes("//span[@class='data-video-ids']"))
{
    string text = node.InnerText;
    lblTest2.Text += text + Environment.NewLine;
}

Any ideas?

+3
source share
2 answers

The "Data-video-ids" that you are trying to filter is not a class, but an attribute - try selecting the following expression in SelectNodes:

"//span[@data-video-ids]"

To get the attribute value, you can try this approach (since HtmlAgilityPack does not support attribute selection, you need to get the element first and then select the actual attribute):

foreach(HtmlNode node in doc.DocumentNode.
    SelectNodes("//span[@data-video-ids]"))
{
    var videoIds = node.Attributes["data-video-ids"];
    if (videoIds == null) continue;

    string text = videoIds.Value;
    lblTest2.Text += text + Environment.NewLine;
}
+3
source

, longrun, YouTube APIs.

- HtmlAgilityPack , API . , YouTube - , . API , .

API Youtube:

YouTubeQuery query = new YouTubeQuery(YouTubeQuery.DefaultVideoUri);

//order results by the number of views (most viewed first)
query.OrderBy = "viewCount";

// search for puppies and include restricted content in the search results
// query.SafeSearch could also be set to YouTubeQuery.SafeSearchValues.Moderate
query.Query = "puppy";
query.SafeSearch = YouTubeQuery.SafeSearchValues.None;

Feed<Video> videoFeed = request.Get<Video>(query);

printVideoFeed(videoFeed);

, ?

+5

More articles:


All Articles