How to remove unused using statements for a whole project?

Question

How to remove unsed using statements for a whole project?

I could not find a shortcut or menu item to remove ALL unused using statements at once for a whole project. If someone knows about such an option I would be glad to hear.

Answer 1

You can add "Productivity Power Tools 2012" extension, that will add an action in contextual menu of the project "Remove and Sort Usings"