I'm sure that it's possible, but not with Turbo Prolog, which is really an ancient system, not compatible with any of the modern OS, proprietary (closed code) and hardly capable of interfacing with anything actual at all. To me, it seems more feasible to create your own Prolog system (which is actually pretty difficult, but not fantastically difficult, a Prolog machine can be a pretty compact system).
Turbo Prolog is not even mentioned in Wikipedia list of implementation, which you can use to choose what to look for:
http://en.wikipedia.org/wiki/Comparison_of_Prolog_implementations[
^].
Anyway, there are at least two Prolog implementations for .NET:
http://homepages.inf.ed.ac.uk/stg/research/Psharp/[
^],
http://prolog.hodroj.net/[
^].
—SA