C# Xpath Error content:encoded

[BlealExap]

HOW CAN I READ A XML ELEMENT SOMETHING LIKE \[code\]<content:encoded><![CDATA[<blockquote><p>some data here ]]<content:encoded>\[/code\]i want to read the above xml nodein c# . but when i use \[code\]"content:encoded" \[/code\]as the xpath runtime error come.\[code\] IXmlNode node = parent.SelectSingleNode("content:encoded");\[/code\]how should i write the xpath for above xml