Open source WPF SQL Syntax Highlighter?

I need to display a SQL Script in my application I am making. It would be nice if this script was syntax highlighted.

Are there any open source/开发者_C百科free WPF syntax highlighters out there?

(NOTE: I am using Visual Studio 2008 and/or 2010 and T-SQL.)

You can check http://wiki.sharpdevelop.net/AvalonEdit.ashx not so easy to use, but you can implement any kind of higlighting and intellisense too