title: C# Xpath Error content:encoded
body: <p>How can I read a xml element, something like: 
   </p>
  
  <pre><code>&lt;content:encoded&gt;&lt;![CDATA[&lt;blockquote&gt;&lt;p&gt;some data here ]]&lt;content:encoded&gt;
  </code></pre>
  
  <p>I want to read the above xml node in C#, but when I use...</p>
  
  <pre><code>"content:encoded" 
  </code></pre>
  
  <p>.. as the xpath runtime error come:</p>
  
  <pre><code>  IXmlNode node = parent.SelectSingleNode("content:encoded");
  </code></pre>
  
  <p>How should I write the xpath for above xml?</p>