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AnswerRe: WSAT deploy to web server Pin
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QuestionRepeater Control Pin
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QuestionHow to send SMS from ASP.NET application to mobiles? Pin
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QuestionHow to generate License Key in Web Application? Pin
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AnswerRe: How to generate License Key in Web Application? Pin
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AnswerRe: How to generate License Key in Web Application? Pin
jkirkerx7-Mar-13 7:09
professionaljkirkerx7-Mar-13 7:09 
There are license key generators out there if you search, it's basically string manipulation, in which you run a function against a pass phrase like the domain name, to generate a key like the Microsoft one. But now you have to decide what to run the key generator against.

License Key Generation[^]

Now you have to be able to validate the key as well on program start up.

but to enforce the key gets quite complex

1. You can call home to your server to validate the key once a month, or every time they do something important.

2. You can hard code your DLL to expire, but then if you have an error, you may get sued.

I can think of a thousand caveats for key validation failure, in which the program shuts off due to a malfunction, so be very careful.

Probably best just to issue a license number, and if the license is valid, offer updates and tech support during the valid period of time for x amount of dollars per year.
GeneralRe: How to generate License Key in Web Application? Pin
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QuestionRadWindow Problem on refreshing the page.. Pin
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Questiondisplay records through age in .net Pin
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QuestionRetrieve Email Id from outlook and send as a response when the user opens the mail Pin
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QuestionASP.NET Pin
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