In Visual Studio, when you rename a variable name in its definition, there\'s a little underline in the last letter so if you hover that, you\'ll get the option \"Rename OldVari
If you like, I would suggest that you try ReSharper, it provides a lot of functionality for refactoring your code.
In ReSharper to rename a variable or function, simply use the shortcut CTRL+R, R.
(I know it may not be an answer to your question, but I think if you like using keyboard shortcuts that you will enjoy ReSharper).