Calling Haskell from .Net

Dear all, I'm new in Haskell. I need to port a haskell application written by someone else to be called by a .Net C# application. Please kindly advise on which option to pursue. Maybe on how to convert haskell code to dll or how to let C++ code (in dll format) to call Haskell. Any helps will really be appreciated. Best Regards, David