Visual Studio: Refactoring

Microsoft's Visual Studio has a very nice feature called 'refactor'.  It replaces the names of a method or function to whatever you rename it.  It does contextual search and replace.  The same name used in other namespace or scope will not be affected.  It alleviates all the troubles associated with renaming.  In the end, the code would come up closer to the final products no matter how you change your course of programming.

Visual Studio's C# refactor, however, is not perfect.  It replaces the names even when there are the same names within the scope.  There is no way to distinguish the variables that has renamed and the existing variables with the same name.  That certainly is detectable.  As for C++ version of the IDE, there isn't such a function to rename methods and variables with contextual searches.