MZ-Tools Articles Series: HOWTO: Manipulate a code or form designer file from a Visual Studio add-in
This is another article long overdue on my list of pending articles, which appears quite frequently on the forums. It explains how to open a window from a file (ProjectItem) in the desired view (code, designer, text):
HOWTO: Manipulate a code or form designer file from a Visual Studio add-in
http://www.mztools.com/articles/2007/MZ027.htm