WPF-Math is a library to render LaTeX formulae in a WPF environment.
Check out the usage example.
The library was originally ported from the JMathTex project, copyright 2004-2007 Universiteit Gent. The port was originally called WPF-TeX and lead by Alex Regueiro.
Later it was accessible as WPF-Math on Launchpad, but has no commits from 2010, until it was ported to its current location on GitHub.