I make desktop application using csharp .
I face issue I can't protect this desktop application I do it from another client use it.
so I ask about way that I can do to prevent another person use it
so what I do to protect my app
so how to give client 30 day as trial then after that if not pay stop it
can you tell me how to do that
What I have tried:
some developer store data on registry
are this best solution for that store on registry or what
if user change date time of windows how to handle that
can I prevent user from install my app again
can any one help me by answer this question by more details
if free or source code or library can use it without pay then I prefer that