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Dear friend
could you please help me to findout setting expiry date for a software.
when each day when the software run that day should be deducted from the limited days.
hope u will help me
Posted

You may want to read this article in CP.

Application Trial Maker[^]
 
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You can store the encrypted installed date and use the LicenseManager class to implement the validating logic.

http://msdn.microsoft.com/en-us/library/system.componentmodel.licensemanager.aspx[^]

License Manager class provides a template to implement license logic.

Or you can use the ready made solutions available as Walterhevedeich informed.
 
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Comments
Sandeep Mewara 27-Apr-11 12:07pm    
My 5!
Albin Abel 27-Apr-11 12:14pm    
Thanks Sandeep. I given this information after OP accepted Walter's answer. Just to inform the way for a custom license managing. Software cracking is a continuing story and so far ready made solutions are cracked. So when OP thinks of implementing his own way this information is a little help for him. Thanks for your voting
Sandeep Mewara 27-Apr-11 12:17pm    
Thats ok. It's a good info and that matters and deserves credit. :)
walterhevedeich 29-Apr-11 4:39am    
Interesting. My 5. One question though, how does the LicenseManager validates the encrypted installed date when the user changed the system date/time? Im just curious about this one because I tried changing the system date on one of my virtual boxes just to avoid the expiration of the trial software(not sure if it was also using LicenseManager) I installed. Luckily, it worked, seemed like it was basing its validation on the installed date alone. :)

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