How to remove unused using namespaces

Question

I am using visual studio 2010 and was wondering if there is a way to automatically remove all the namespaces that aren\'t being used at the the top of the page e.g.

Answer 1

I know the OP specified VS 2010, but that was a while ago and this feature is built right into VS 2017. From the Menu, Tools -> Options, then find the check box below.

After that, any time you use CTRL + K , CTRL + D they will be removed.