Making an app cease working after some time/at a certain time

Posted on 2006-04-11
Last Modified: 2010-04-16
I am wondering how one goes about making an application not work after some time. I just made an app (windows forms) and I want it to work for a year and then the buyer needs to buy again. How do I do that? This is similar to how many companies do, they license their software for some time and after some time it stops working or something like that. How is this done?
Question by:Snertill
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