VSFormatter is a rudimentary auto-formatter for Visual Studio.
It creates an instance of Visual Studio, opens a set of *.cs files and auto-formats them using SelectAll() + SmartFormat(), saves the file(s) and then quits VS without saving the solution.
Current version references and targets VS14 (Visual Studio 2015), but can easily be changed to target any version of VS by removing and re-adding the "Microsoft Development Environment 8.0" COM reference and replacing the version number in the "VisualStudio.DTE.14.0" ProgID reference
C:\> VSFormatter.exe C:\path\to\cs\files
VSFormatter will recursively search for files with the .cs extension in the directory C:\path\to\cs\files and autoformat any syntactically valid file.