I'm am sorry but the code editor built in to Test Studio standalone is not as feature rich as Visual Studio. I know the key combination you're thinking of that works very well in Visual Studio, but there's no equivalent in Test Studio. We have many things like this on our TODO list, but don't have target dates set for them (yet).
If you have Visual Studio, and you need to do a lot of code changes, I recommend using Visual Studio and our plug-in. You get all the record and playback and test maintenance features that you get with Test Studio. Plus you get all the code editing features that come with Visual Studio. You can even open the same project on disk in both products (just not concurrently), so you can switch back and forth as needed.
All you're missing by using our VS plug-in is:
- Performance testing
- Load testing
- Test Studio test lists
- Scheduling tests to a Test Studio scheduling server