How to set a trial version for an application writern in C# ?

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SQL-Server-2005

I have created an application/software in C# language. I want to set a trial version for non-registered users.

Is there any code or built-in control or DLL Library in Visual Studio so that i can use it to solve my problem ?

Please I need your urgent help.

Regards,

Ahmed Khan

Posted 30-Jan-10 9:21am

ahmedak53

Updated 1-Feb-10 11:25am

CPallini

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4 solutions

Solution 3

What is conditional compilation ?

Will you please explain it with some code or screenshots so that i can understand a lit bit clearly :-)

Posted 1-Feb-10 9:22am

ahmedak53

Updated 1-Feb-10 11:23am

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Christian Graus · Accepted Answer · 2010-01-30T11:56:00

Solution 2

The best way IMO is to use conditional compilation to create a trial that doesn't include the code you don't want to give away. Otherwise someone will reverse engineer and defeat your trial.

Posted 30-Jan-10 11:56am

Christian Graus

AspDotNetDev · Accepted Answer · 2010-02-01T09:48:00

Solution 4

This webpage explains conditional compilation.

Posted 1-Feb-10 9:48am

AspDotNetDev

#realJSOP · Accepted Answer · 2010-01-30T09:30:00

Why don't you just include a nag screen if it's not registered. Have the nag screen come up every 5 minutes or whenever a major feature is used.

Don't forget to obfuscate your code with a COMMERCIAL obfuscation tool. Don't use the one that comes with VS2008 because it can easily be reverse engineered.