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.

Answer 2

In Visual Studio 2017, I use this very simple key combinations: CTRL+R+G to remove unused imports/namespaces

Update:

In VS for Mac:

Unfortunately, there's no default key binding for this but you can always edit your preferences.

Visual Studio -> Preferences

In my case, it is binded as ⌘+R+G

Answer 3

I am using Visual Studio 2019 and for some reason my project settings have a Warning level of 3 and this prevent Visual Studio from cleaning the usings. Make sure this value is set to 4.