Which SDK for development of Kiosk (KM24A)

I am trying to develop a .Net Application on Visual Studio. But I need an extension. I figured I would need TV-Extension 4.0, but tat runs into errors with the emulator.
Could someone please tell me if it is even possible to develop .net applications for the Kiosk and if so, which SDK I would need. And where to get it because my 4.0 seems to be wrong…

The only thing I seem to find on Kiosk development tutorials for regarding Knox

Not Samsung But did you try this tool by Intuiface?

Samsung Developer Relations

So does inquiry run on a web app? since you said .net isn’t possible to run on it.
Thanks for the link but I am looking for a code option.