We contracted a guy to build .net app. His team is in India, and am afraid they may not have licensed softwares their, which may eventually get us in troubles.
Is their anyway I can tell if the end product he deliver was developed with licensed Visual Studio ?
I'm not sure there actually is - especially because Visual Studio itself doesn't compile the code, if it's C# then its the CSC.exe (VBC.exe for Visual Basic) file that does the work and that itself comes with the .Net framework and is free.