Visual Studio 2010 Product Key Generator
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Hi,I have developed a windows application in C#.NET in VS 2008 with MS Access as its back end. I have also created setup for my product, now i would like to set license keys for my application, how can i achieve this, please help me.what exactly i want is, for instance, when installing MS Word, it asks for license key right? Like that.One of my buddies suggested to write to Registry keys through code, buti want the key validation at the time of installation exactly as it goes for MS Word or other soft wares with license keys.
Please help me buddies.Thanks in advance. Hi James,The complete process is almost long and complicated. I'll try later to post a complete solution to my blog when I have more free time.
I'm sorry!However, in summary the solution is as below:1. When the user tries to run the application, check for license file existence in the current folder.2. If license file doesn't exist, open a dialog containing two text boxes, one for the product key another for license key. Generate a pruduct key and fill the dialog by it. You can use ' 20100603' (current date) as the product key. Then theuser should send you this product key and you should apply an algorithm on it and finally send it to the user as license key.
You can use reverse algorithm and send ' 30600102' as license key to the user. Then the user should enter this to thedialog and click OK. You should validate license key by reverse algorithm for example after OK. If it's invalid, message the user otherwise encrypt product key and license key in two lines and store in a license file e.g. like( How to encrypt and decrypt a file by using Visual C#)3. If license file exists, open, dycript and validate it.
Visual Studio 2010 Free Key
If it's valid continue otherwise message the user.Hope this helps enough.Sincerely,YasserLEARN HOW WPF IS FLEXIBLE IN PRESENTATION DURING A QUICK SIMPLE WALKTHROUGH. You can't do this in a VS Setup Project (MSI-based install) because although there is a canned dialog where the user can enter a key there is no hook for you to validate the key at install time (not without installing the app and then failing it at theend). So basically you can't do it the way Word does it with a VS setup project (and Word isn't installed with a VS setup project anyway). That means you need another setup tool, or you have the application do key validation. That's actually morecommon than you think because keys are sometimes time-limited and the user needs to get another (without re-installing) or the app has a lot of functionality that requires another key or license to use.Phil Wilson.
As I said, there is no hook for validating the the key without installing the product all the way to the end (which is when custom actions run) and then failing it if the key is wrong, throwing an install exception and rolling back. In other words, the userexperience is they start the install, enter a key which does not get validated at that time, it installs everything and then after 15 minutes it fails the key and rolls back, uninstalling. Not exactly friendly.The CodeProject article builds on but doesn't really add much value.
The basic issue is to hook the validation code to to the Next button, and the internals of doing that with Orca are pretty awful, which is why thatCodeProject article wants you to get it from a file on disk. What???!!!Basically, you're outside the scope of what Visual Studio setup projects can provide. Setups that need that kind of extra functionality aren't built with Visual Studio setups (they use WiX, InstallShield or whatever) because they DO let you hook validationcode into a Next button. That's whay I said, look, do this in the app, and validate it there, let them retry it, and don't let the app do anything until the key is validated.Phil Wilson. Hi James,The complete process is almost long and complicated. I'll try later to post a complete solution to my blog when I have more free time.
I'm sorry!However, in summary the solution is as below:1. When the user tries to run the application, check for license file existence in the current folder.2. If license file doesn't exist, open a dialog containing two text boxes, one for the product key another for license key. Generate a pruduct key and fill the dialog by it. You can use ' 20100603' (current date) as the product key. Then theuser should send you this product key and you should apply an algorithm on it and finally send it to the user as license key. You can use reverse algorithm and send ' 30600102' as license key to the user.
Then the user should enter this to thedialog and click OK. You should validate license key by reverse algorithm for example after OK. If it's invalid, message the user otherwise encrypt product key and license key in two lines and store in a license file e.g. like( How to encrypt and decrypt a file by using Visual C#)3.
If license file exists, open, dycript and validate it. If it's valid continue otherwise message the user.Hope this helps enough.Sincerely,YasserLEARN HOW WPF IS FLEXIBLE IN PRESENTATION DURING A QUICK SIMPLE WALKTHROUGH. You can't do this in a VS Setup Project (MSI-based install) because although there is a canned dialog where the user can enter a key there is no hook for you to validate the key at install time (not without installing the app and then failing it at theend).
So basically you can't do it the way Word does it with a VS setup project (and Word isn't installed with a VS setup project anyway). That means you need another setup tool, or you have the application do key validation. That's actually morecommon than you think because keys are sometimes time-limited and the user needs to get another (without re-installing) or the app has a lot of functionality that requires another key or license to use.Phil Wilson.
You can't do this in a VS Setup Project (MSI-based install) because although there is a canned dialog where the user can enter a key there is no hook for you to validate the key at install time (not without installing the app and then failing itat the end). So basically you can't do it the way Word does it with a VS setup project (and Word isn't installed with a VS setup project anyway). That means you need another setup tool, or you have the application do key validation. That's actuallymore common than you think because keys are sometimes time-limited and the user needs to get another (without re-installing) or the app has a lot of functionality that requires another key or license to use.Phil WilsonIt's possible via ' Custom Actions' e.g. ( Walkthrough: Using a Custom Action to Create a Database at Installation)LEARN HOW WPF IS FLEXIBLE IN PRESENTATION DURING A QUICK SIMPLE WALKTHROUGH. As I said, there is no hook for validating the the key without installing the product all the way to the end (which is when custom actions run) and then failing it if the key is wrong, throwing an install exception and rolling back. In other words, the userexperience is they start the install, enter a key which does not get validated at that time, it installs everything and then after 15 minutes it fails the key and rolls back, uninstalling.
Not exactly friendly.The CodeProject article builds on but doesn't really add much value. The basic issue is to hook the validation code to to the Next button, and the internals of doing that with Orca are pretty awful, which is why thatCodeProject article wants you to get it from a file on disk. What???!!!Basically, you're outside the scope of what Visual Studio setup projects can provide. Setups that need that kind of extra functionality aren't built with Visual Studio setups (they use WiX, InstallShield or whatever) because they DO let you hook validationcode into a Next button.
That's whay I said, look, do this in the app, and validate it there, let them retry it, and don't let the app do anything until the key is validated.Phil Wilson. Check this out.
After you copy it in your databse write a logic to register for online registration. Keep a flag for e.g Status bool which can be null.Default value in database will be null and when anyody purcahases your software your Status will be false.
Visual Studio 2010 Product Key Generator Download
And when he acyually registers it it will be set to true. You can use simple maths combination on keys the software generate so it satisfies your logic.Putthis all in database and there is no need to verify online.Just do simple maths inside your application for given key and it will work fine.Regards,Bhushan Poojary.