Question

I have created a program with a 30 day trial period in VB.Net. The program saves the time in the registry that the program was first launched and also the time is was used last. From that I calculate if the trial is still valid.

The problem is, the only place in the registry that a non-admin user can access is the HKEY_LOCAL_USER key. I need to implement the trial for all users, otherwise a user can just use a new account and that would reset the trial.

Where can I save this information so that a user without admin rights can read and write from that location? I also want to save it in a place that the average user can’t find too easily and delete the file that would reset the trial.

Thanks

Answer 1

My problem was actually where to save data that all users can access (read and write).

In Win 7 this can get tricky. I found this article on code project that explains how this can be achieved for folders.

I then read a file and save values in the registry as suggested by Kenny above.

If somebody has a better method, please share it.