Why doesn't it remove the xml element (LINQ to XML)?

Question

.NET

What am I doing wrong?
For some reason it does not remove the element from XML

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<links>
  <link>http://24tv.ua/rss/all.xml</link>
  <link>http://www.pravda.com.ua/rss/view_mainnews/</link>
</links>

myOwner.xmlDoc.Descendants("links")
                    .Elements("link")
                    .Where(x => x.Value == listBoxLinks.SelectedItem)
                    .Remove();

Answer 1

This will not work, you cannot change the collection when it is enumerated.

foreach(var n in myOwner.xmlDoc.Descendants("links")
                    .Elements("link")
                    .Where(x => x.Value == listBoxLinks.SelectedItem)
                   .ToList())
{
                   n.Remove();
}