Visual Commander is a freemium extension for Visual Studio 2010+ allowing you to automate repetitive tasks in the IDE.
Visual Commander Professional v2.4.1 adds the option to select C# v6.0 compiler in Visual Studio 2015 (the free edition supports only C#/VB v4.0) and use features like string interpolation in your commands:
In Visual Studio “15” you can use C# v7 features like local functions:
https://tabsstudio.com/
Making Visual Studio perfect 