Whenever you create a new code file in Visual Studio, it adds a default set of using namespaces automatically to faster the development process in common name resolution. Not all of them are mandatory to use and can be remove at later point of time or before code check-in.
Visual Studio 2015 provides us an easy way to organize the using namespaces within the active code file, project and/or solution. You will really love this new feature. Continue reading to learn more about it.