Dynamic object for XML or XML to JSON string converter

A direct conversion XML->JSON (besides XML->object->JSON) would make some implementations way easier. Searching for information in JSON or Dynamic objects is way easier than in XML. I am developing an API that receives many different kinds of XML, and I need to transform them into a specific structure of persistent data, so if I have to create a class for each kind of XML that it should receive, the implementation will be gigantic.