>I find myself going into VFP to use the code reference tool to find things that might be in one of several C# projects.
>The search tool in C# is good but AFAIK, it's limited to the current solution, while can point the Code Reference tool to a top level folder and let it go.
>I did some browsing and found some 3rd party tools that sound OK, but am I missing something in .NET?

As Craig suggests 'Find in Files' works. But if you have the code defining the method/property that you are interested in showing in the code window you can:
(a) Right click on it and choose 'Find all references' or, even better:
(b) choose 'View Call Hierarchy'

The latter will show all calls made FROM the method as well as all calls TO. Plus you can track back - ie. all calls to the calls that call the method etc...