Arma2NET gives you the ability to use the Microsoft .NET Framework from SQF script code in RV engine games. It is designed to be an alternative for those who don't want to use C or C++ with callExtension.
There is a wide range of language implementations that target the Common Language Runtime, so you can potentially use C#, Python, VB.NET, F#, Ruby and more from SQF.
To use Arma2NET you should be running Arma 3 or Arma 2 version 1.62 or later.
Microsoft .NET Framework 4 Client Profile must be installed. Download it from http://www.microsoft.com/download/en/details.aspx?id=24872
Microsoft Visual C++ 2013 32-bit must also be installed. Download it from http://www.microsoft.com/en-us/download/details.aspx?id=40784, selecting vcredist_x86.exe.
Copy the @Arma2NET modfolder into your game installation directory.
Delete the @Arma2NET modfolder from your game installation directory.
Optionally delete any Arma2NET log files from your AppData folder.
The Arma2NET wiki can be found here: https://github.com/ScottNZ/Arma2NET/wiki