IXPathNavigator (implemented by the above)
Selecting, Evaluating and Matching XML Data using XPathNavigator - .NET
Learn more about: Selecting, Evaluating and Matching XML Data using XPathNavigator

Allows you to select, evaluate, match and modify the DOM.
Select
// select many
var listOfNodes = navigator.Select("/ParentClass/XmlDecorators/XmlDecorator");
// select one
var singleNode = navigator.SelectSingleNode("/ParentClass/XmlDecorators");Note: that the parent class, the class you are searching from at root, you must search by its name at the start
Evaluate