I’ve been watching some videos on C# and the instructor has some type of plugin or option set that allows him to do some really neat things.
Here’s an screenshot of what’s going on.

Basically, it’s like a more advanced autocomplete or intellisense. Additionally, another feature I saw it do is if he clicks on the icon circled, he can change classes to public with just a click.
I know I sound very new to this, because I am (VS rookie). If anyone knows what amazing witchcraft this is, I’d love to know.
Thanks!
This is code rush and/or refactor pro by DevExpress.
The other big player in this arena is Resharper by JetBrains.
Both are commercial add-ins to Visual Studio, though many of the refactoring and code generation helpers are built into Visual Studio (like the “implement abstract class” in your screen shot).