This has been mentioned before in the newsgroup but I don't believe it was ever added to the tracker: Currently, Resharper 2.0 does not support custom BuildProviders (an ASP.NET 2.0 feature). See info below taken from a newsgroup post: A BuildProvider is a new component in ASP.NET 2.0 which provides a mechanism for auto generating code. In fact, ASP.NET uses build providers behind the scenes to do its compilation. But in addition to the out of the box build providers, they allow you to write your own build providers (specified in the web.config file). The really nice thing about this is that Visual Studio provides full intellisense support for it. It would be nice if Resharper supported custom build providers, both in its intellisense and also in its background error checking. Here are a few articles that describe the feature more completely: http://www.codeproject.com/aspnet/custombuildproviders.asp http://notgartner.com/posts/1546.aspx http://blogs.msdn.com/kaevans/archive/2005/09/02/460231.aspx http://pluralsight.com/blogs/fritz/archive/2004/09/06/2188.aspx