XML reserved characters

I got sucked into a project at work where I have to pull data from a database table and write out an XML file. I have been searching and have several answers from a couple to several but I thought I would ask the XML wranglers here:

Are there any reserved characters that should be escaped in an XML document?
If so, what’s the proper way to escape them?

google is your friend here

Yeah Google isn’t my friend when there are many conflicting results. Thanks for the link.

The XML classes handle this for you.