If you’re a LINQPad user you’re probably used to query your DBML (LINQ to SQL), but did you know that you can also use it for LINQ to Objects, LINQ to XML etc.
A simple example of how to do a query against a XML file (make sure language is set to C# Statements):
var xml = XElement.Load (@"c:\\inetpub\\GWportal\\src\\wwwBackend\\App_Data\\axCache\\
var query =
from e in xml.Descendants("unittransaction").Descendants()
where (e.Attribute("name").Value == "ItemRelation" && e.Value.Equals("10020"))
Which gives this result: