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How to implement software for trial for 15days...

Posted By: susant     Posted Date: November 19, 2008    Points:2   Category :C#
hi all
I developed a C#.Net application and i want to give client for trial of 15days.. after 15days my software will not work in client machine...

if client purchasing my application then it will work..
how to do that..


suant
Banglore

Responses
Author: Amit Mehra             
Posted Date: November 19, 2008     Points: 5   

Hi,
The best way Make an entry to registry to the date it installed and in the Form_Load check the Trail Date.

Also make another entry if user purchase the software or its in Trail period. If user has entered valid product key then Make changes in this entry and also set the End Date of the trial period to whatever you want or Max date.

Both entry you can check on the Page_Load Event.

And Make sure that entry should be Encrypted one.

Thanks,
Amit
Please "Mark As Answer " if this post help you.
Author: susant             
Posted Date: November 19, 2008     Points: 5   

Hi Amit
ThanX for ur idea.. can u send me some code ya some link how to do that..



susant
Banglore

Author: Amit Mehra             
Posted Date: November 19, 2008     Points: 5   

Hi,
For writing to system Registry you can refer this article this might be helpful to you

http://dotnetspark.com/kb/25-write-to-system-registry.aspx

Thanks,
Amit
Please "Mark As Answer " if this post help you.


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