Visual studio creates project files for you for the various languages, such as C++, C#, VB. These files are XML format, and can thus be queried. Try this: open any non-temporary Visual Studio project (see Use temporary projects in Visual Studio...

I was running out of disk space on one of my machines, so I used my TreeMap program to see where I could delete files to save space. I saw that I still had VB6 on the machine, and I didn’t need it on that machine any more, so I uninstalled it. ...