How do I load and update a XML

I have开发者_运维技巧 tried with XML Lite which is pretty good with reading and writing a new xml , but when I try to add a new element to an existing XML , I am unable to figure out how to go about it.

Is there any other way, I can do XML operation.

For simple XML work TinyXml is a good place to start.

Processing (Reading and Writing) an XML Document Using XmlLite demonstrates how to update xml file with XmlLite in a streaming manner.