Today I have finished first version of my remake of the NST Management application. Now, completely done inside NAV! I wanted to test the DotNet interop in NAV 2009 R2, and I have found, that it works, and it works without any problem! Because I already knew what I needed to do the NST management, it was easy to replicate the app from C# into C/AL. If you look at the code, it is easy! Just few lines of code to read all available SQL server, to read databases on the SQL server, to show folder selection...