This extension translates selected text in the editor.
It adds "Translate" command to editor's context menu.
The translations are shown in popups below translated text.
Source code is on Codeplex.
Some pictures to prove that it really works
Setting menu shortcut
I don't provide any shortcut for "Translate" command by default, because it may conflict with other commands, but you can set it manually in the keyboard configuration.
Just search "Translate", set "Use new shortcut in" = "Text Editor", press the key combination that you selected, and then press "Assign".
+ Visual Studio 2015 support
+ Bing Translator support
+ Visual Studio 2013 compatibility
+ Can replace original text with translation
+ VS11 compatibility