As mentioned in RSRP-42505, it should be possible to markup methods (specifically parameters) as acting like a string formatting method using a user attribute, much like the null and not-null attributes, like so: private void WriteFormat([StringFormat] string moreText, params object[] args) { ... } However, I understand that we still need the ability to specify a fully qualified path and parameter in the grid to mark third-party libraries, so that must stay and this feature request is to add the attribute functionality on top of the existing functionality.