How to create and provide product key to c# windows application

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Hey,
I had created my application but i want to put expiry date and product key validataion to that my application.

What I have tried:

no Idea about what to use and how to..i m new in C#

Posted 19-Feb-16 2:45am

Member 12270370

Updated 19-Feb-16 4:46am

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ZurdoDev 19-Feb-16 9:01am

There are many, many ways including 3rd party products, to do this. I suggest googling for some options and go with the one you like the most.

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Patrice T · Answer 1 · 2016-02-19T03:26:00

As said RyanDev, you can Google for a third party solution or design your own.

It is your duty to choose what you want, what functionality.

For information: MS-Office 97 was using a key that was simply divisible by 7.
By principle, the key must have a mathematical property that is complicated to duplicate.
One problem of keycodes is that the same key can be used more than once. Only a validation via an internet connection can prevent this.

Maciej Los · Answer 2 · 2016-02-19T04:46:00

Solution 2

CP Knwoledge Base is full of examples: Search - CodeProject[^]

For example:
Software Copy Protection for .Net Applications - a Tutorial[^]
Copy Protection for Windows Applications[^]

Posted 19-Feb-16 4:46am

Maciej Los

Comments

Patrice T 19-Feb-16 10:49am

+5 too

Maciej Los 19-Feb-16 10:51am

Thank you.