Hi @gishan, sorry to hear about your troubles in getting setup on a WPF project from scratch.
You are very close! The only remaining step is to copy across manually the remaining DLL (tobii_stream_engine.dll, tobii_interaction_lib.dll, tobii_interaction_lib_c.dll) from the interaction library ‘lib’ folder to your project debug output folder (bin\x64\Debug)
Please try it out and let us know how you get on. Best Wishes.