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    copied!<p>Old question but I think that lot of people have this problem, like I did.</p> <p>The xmlns stand for: XML NameSpace. So, when it is in present in the XML you need to use it to search. For example, if you want to find an element like <code>"&lt;url xmlns='sm'&gt;"</code>, you would need to especify that you're looking for an element that has name <code>"url"</code> and namespace <code>"sm"</code>.</p> <p>Why? I'm sorry I can't answer exactly why, but it works like this.</p> <p>Well, to solve my problem I've changed my code to use XmlReader and LinqToXML, what make things "much easier".</p> <p>This is the XML:</p> <pre><code> &lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"&gt; &lt;url&gt; &lt;loc&gt;http://www.url.com/&lt;/loc&gt; &lt;changefreq&gt;daily&lt;/changefreq&gt; &lt;priority&gt;1.00&lt;/priority&gt; &lt;/url&gt; &lt;url&gt; &lt;loc&gt;http://www.url.com/&lt;/loc&gt; &lt;changefreq&gt;daily&lt;/changefreq&gt; &lt;priority&gt;0.9000&lt;/priority&gt; &lt;/url&gt; &lt;url&gt; &lt;loc&gt;http://www.url.com/&lt;/loc&gt; &lt;changefreq&gt;daily&lt;/changefreq&gt; &lt;priority&gt;0.9000&lt;/priority&gt; &lt;/url&gt; &lt;url&gt; &lt;loc&gt;http://www.url.com/&lt;/loc&gt; &lt;changefreq&gt;daily&lt;/changefreq&gt; &lt;priority&gt;0.9000&lt;/priority&gt; &lt;/url&gt; &lt;/urlset&gt; </code></pre> <p>And this is the code that I used to read it:</p> <pre><code> XDocument xmlDoc = XDocument.Load("sitemap.xml"); if (xmlDoc.Elements().Count() &gt; 0) { using (MemoryStream memStream = new MemoryStream()) { xmlDoc.Save(memStream); memStream.Position = 0; using (XmlReader reader = XmlReader.Create("sitemap.xml", new XmlReaderSettings() { IgnoreWhitespace = true })) { reader.MoveToContent(); while (reader.Read()) { if (reader.NodeType == XmlNodeType.Element &amp;&amp; reader.LocalName.Equals("url", StringComparison.OrdinalIgnoreCase)) { XElement el = XNode.ReadFrom(reader) as XElement; if (el == null) continue; XName loc = XName.Get("loc", el.Name.Namespace.NamespaceName); XName changefreq = XName.Get("changefreq", el.Name.Namespace.NamespaceName); XName priority = XName.Get("priority", el.Name.Namespace.NamespaceName); var elLoc = el.Element(loc); var elChangeFreq = el.Element(changefreq); var elPriority = el.Element(priority); } } } } } </code></pre> <p>Hope this helps. </p>
 

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