How to convert XmlNode into XElement?

Alexander Abakumov picture Alexander Abakumov · Jul 14, 2014 · Viewed 35.2k times · Source

I have an old XmlNode-based code. but the simplest way to solve my current task is to use XElement and LINQ-to-XML. The only problem is that there is no direct or obvious method for converting a XmlNode to a XElement in .NET Framework.

So for starters, I want to implement a method that receives a XmlNode instance and converts it to a XElement instance.

How can I implement this conversion?

Answer

EZI picture EZI · Jul 14, 2014
var xElem = XElement.Load( xmlElement.CreateNavigator().ReadSubtree() );

There are two problems with xmlElement.InnerXml used in other answer,

1- You will loose the root element (Of course, it can be handled easily)

XmlDocument doc = new XmlDocument();
doc.LoadXml("<root> <sub>aaa</sub> </root>");
var xElem1 = XElement.Load(doc.DocumentElement.CreateNavigator().ReadSubtree());
var xElem2 = XElement.Parse(doc.DocumentElement.InnerXml);

xElem2 will be <sub>aaa</sub>, without(root)

2- You will get exception if your xml contains text nodes

XmlDocument doc = new XmlDocument();
doc.LoadXml("<root> text <sub>aaa</sub> </root>");
var xElem1 = XElement.Load(doc.DocumentElement.CreateNavigator().ReadSubtree());
var xElem2 = XElement.Parse(doc.DocumentElement.InnerXml); //<-- XmlException