title: reading node from xml file in XMLDocument
body: <p>i am trying to grab the <code>TopicName</code> how should i go after it and try different combination but somehow i am unable to get <code>TopicName</code> below is my source codee...</p>
  
  <pre><code>XmlDocument xdoc = new XmlDocument();//xml doc used for xml parsing
  
      xdoc.Load(
          "http://latestpackagingnews.blogspot.com/feeds/posts/default"
          );//loading XML in xml doc
  
      XmlNodeList xNodelst = xdoc.DocumentElement.SelectNodes("content");//reading node so that we can traverse thorugh the XML
  
      foreach (XmlNode xNode in xNodelst)//traversing XML 
      {
          //litFeed.Text += "read";
      }
  </code></pre>
  
  <p>sample xml file</p>
  
  <pre><code>&lt;content type="application/xml"&gt;
   &lt;CatalogItems xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="sitename.xsd"&gt;
          &lt;CatalogSource Acronym="ABC" OrganizationName="ABC Corporation" /&gt;
          &lt;CatalogItem Id="3212" CatalogUrl="urlname"&gt;
            &lt;ContentItem xmlns:content="sitename.xsd" TargetUrl="url"&gt;
              &lt;content:SelectionSpec ClassList="" ElementList="" /&gt;
              &lt;content:Language Value="eng" Scheme="ISO 639-2" /&gt;
              &lt;content:Source Acronym="ABC" OrganizationName="ABC Corporation" /&gt;
              &lt;content:Topics Scheme="ABC"&gt;
                &lt;content:Topic TopicName="Marketing" /&gt;
                &lt;content:Topic TopiccName="Coverage" /&gt;
              &lt;/content:Topics&gt;
            &lt;/ContentItem&gt;
          &lt;/CatalogItem&gt;
        &lt;/CatalogItems&gt;
      &lt;/content&gt;
  </code></pre>