You may also find useful our sample licensing projects. Licensing library for VB applications. Table of Contents. Integrate licensing feature in VB projects The following article uses options that are available starting with the Enterprise edition and project type. Create the Visual Basic project using Visual Studio 2. Convert your project to Enterprise 4.
Add Trial and Licensing 5. Choose Trial Options 5. Integrate the Licensing Library within application 7. Done - Build and install 8. Register the application 9. Uninstall and Clean-up Video tutorial.
We will later add the code that will verify the trial period and registration key. Advanced Installer supports several types of trial periods: Time Limited - the trial period will end after a predefined number of days have passed since the installation of the product.
Uses Limited - the trial period will end after a predefined number of runs of the application. Both - the trial period will end when one of the above ends. Lets not choose to support trial extension options to keep thinks simpler.
Now we should specify which kind of application will use the licensing library. Integrate the Licensing Library within application In our Visual Studio project lets set the corresponding platform of the VB application. Into the Form1. Imports System Imports System. Object, ByVal e As System. EventArgs Handles MyBase. Show ex. ToString Process.
Click If registered Then MessageBox. Show "The application is already registered. OK, MessageBoxIcon. If Me. OpenForms form. Improve this question. TylerDurden 1, 1 1 gold badge 17 17 silver badges 29 29 bronze badges. What i suggest to do, is on first run, save a value of datetime in registry in some encoded way. Then on each run pull that value and compare to now.
Add a comment. Active Oldest Votes. Let's say your program called "MyProg" and you want user to try it for 7 days. Object, e As System. Hope that helps. Improve this answer. Will my program be a trial which will expire after 7 days exactly? Problem is that my code programatically clicks the button of first page 2nd page and 3rd page.
But is is not clicking the button on 4th page programatically. How can i enable my code to do that??? Please suggest a reliable solution for this.. Thank you so much in advance — user NET environment.
Please note that earlier versions of this article used code that will result in keys that are not compatible with this code. Software key codes are a popular way of authorizing use of a program. They need to be reasonably short, but secure from hacks intended to work around them. Allowing the flexibility to store an extra bits of configuration data that can be used as either a raw number, a date, or as 16 boolean options is a very useful addition to many other approaches.
Included in the source project is a class called LicKey. Simply add this class and the Base
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