Find in Files: Search all code in Team Foundation Server
Team Foundation Server 2015 (on-premises) and Visual Studio Team Services (cloud version) include built-in support for searching across all your code and work items. You can do simple string searches like foo, boolean operations like foo OR bar or more complex language-specific things like class:WebRequest You can read more about it here: https://www.visualstudio.com/en-us/docs/search/overview