This is part of a series of ReSharper Ninja ticks and workflows which I’ve picked up over the years. This particular one is brand new in ReSharper 7.
This is a new feature in ReSharper 7 and one that I and many with me has been missing for a long time. Previously when you had a class with too many responsibilities, you had to go through a lot of hoops with ReSharper to refactor the code into cohesive units, and it usually involved a few manual steps.
Now, in version 7, we have an option on the refactoring menu called Extract class which automate the procedure. You place the marker on a class member and hit Ctrl+Shift+R to bring up the refactoring menu, and choose Extract class. This gives you a dialog where you can pick which members should be extracted and ReSharper analyses dependencies between different members such that the code won’t brake after the refactoring.
Checkout Hadi Hariri’s presentation on Extract Class at 07:28