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How to make 30 days trial

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  • D Offline
    D Offline
    D i x y
    wrote on last edited by
    #1

    Hello Friends, I am developing a windows application where i need to make two versions for the application one is Full and another is DEMO version My Question is how to make DEMO version 30 Days Trial and after 30 days it will expires if user changes system date back or forward then one day will be subtracted from trail.. Thanks

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    • D D i x y

      Hello Friends, I am developing a windows application where i need to make two versions for the application one is Full and another is DEMO version My Question is how to make DEMO version 30 Days Trial and after 30 days it will expires if user changes system date back or forward then one day will be subtracted from trail.. Thanks

      R Offline
      R Offline
      Rupesh Kumar Swami
      wrote on last edited by
      #2

      You can Create key in registry which holds the data of your application.Simply add parameter(subkey) like dayRemaining, lastUsedDate etc to this key in registry and check at application startup. If you have no idea about registry then click the Read,Write and delete from registry with c# hope this helps

      Rupesh Kumar Swami Software Engineer, Integrated Solution, Bikaner (India) My Company My Article

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      • D D i x y

        Hello Friends, I am developing a windows application where i need to make two versions for the application one is Full and another is DEMO version My Question is how to make DEMO version 30 Days Trial and after 30 days it will expires if user changes system date back or forward then one day will be subtracted from trail.. Thanks

        T Offline
        T Offline
        Thomas Stockwell
        wrote on last edited by
        #3

        CodeProject search: Secure Software Distribution SDK[^]

        Regards, Thomas Stockwell Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning. Visit my homepage Oracle Studios Discounted or Free Software for Students: DreamSpark - downloads.channel8.msdn.com MSDN Academic Alliance - www.msdnaa.com

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