I want to build a little system to some school.
I want the users of this system to have a windows application based program.

On the other hand I want them to be able from home ... but this time I need web forms.

My question is if there is a way to build the GUI only for both web and windows application and get the functions from the same place say : example.cs

I tryed to call a source code of another project but it didn't work for me (I guess it's because of the namespace).