Получение настраиваемого элемента элемента rss-фида с помощью syndicationitem?

У меня есть RSS-канал, например:

<item>
<title>
Ellen celebrates the 20th anniversary of coming out episode
</title>
<link>
http://www.dailymail.co.uk/video/tvshowbiz/video-1454179/Ellen-celebrates-20th-anniversary-coming-episode.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490
</link>
<description>
Ellen celebrates 20th anniversary of coming out episode on her old sitcom 'Ellen'. Ellen said she cried during rehearsals but urged everyone to stay true to themselves and it will benefit you in the long term.
</description>
<enclosure url="http://i.dailymail.co.uk/i/pix/2017/04/27/00/3FA409EA00000578-0-image-m-21_1493249529333.jpg" type="image/jpeg" length="7972"/>
<pubDate>Thu, 27 Apr 2017 00:45:14 +0100</pubDate>
<guid>
http://www.dailymail.co.uk/video/tvshowbiz/video-1454179/Ellen-celebrates-20th-anniversary-coming-episode.html?ITO=1490&ns_mchannel=rss&ns_campaign=1490
</guid>
<media:description/>
<media:thumbnail url="http://i.dailymail.co.uk/i/pix/2017/04/27/00/3FA409EA00000578-0-image-m-21_1493249529333.jpg" width="154" height="115"/>
<media:credit scheme="urn:ebu">YouTube</media:credit>
<media:content url="http://video.dailymail.co.uk/video/mol/2017/04/26/4464646762446275941/1024x576_MP4_4464646762446275941.mp4" type="video/mp4" medium="video" duration="245" lang="en"/>
</item>

Я пытаюсь получить значение URL-адреса media: content, когда я просматриваю элементы синдикации следующим образом:

            foreach (SyndicationItem item in feed.Items)
            {

                foreach (SyndicationElementExtension extension in item.ElementExtensions)
                {
                    XElement ele = extension.GetObject<XElement>();
                    MessageBox.Show(ele.Value);
                }


            }

Я получаю пустые данные, как я могу получить URL-адрес медиаконтента?

Ответ 1