I am looking for a utility that will go through all the XAML files in a project and define certain styles that are not used anywhere.
Does such a tool exist?
There is no such tool as far as I know.
You can use a simple search VisualStudioor Expression Blend or XamlPad (which is free).
VisualStudio
Hope this helps.
If the style is in the same ReSharper file , it demonstrates well unused styles, a converter, etc. painting them a little. There is a 30 day trial.
What it looks like:
Silverlight. WPF. :
Silverlight
Rgds,