Make Combination of Keys For Our Trial Version Application

How to set no of days

In the above code i want to know ...what is string abc = @"Software\Tanmay\Protection"; kindly help me

Thanks,only thanks will not work here but,what can i say it helped me a lot,i would like to talk to you if you provide me with your email ID

good one

great work..thankss

Guy Thanks for the great help, Your code was very much appreciated by friends programadosres here in Brazil. Thanks! and success!

In that way, you will have 15 days for each PC... This is not a big problem :) Just a suggestion for a possible improvement. If I get something new I will share here with you.

Great article! Congrats! Only a tip: It won't work for a small intranet network. I mean, if you install your app to the main PC and grab a shortcut to other PC it won't work anymore. The main PC won't open the app but the other PC will do.

how can i check for years? i want this program to identify for how many years is a single pool of array? i have to define 2 pools of string[] and i want it to check from which pool its given.. any help will be appreciated.

Mr Sarkar, This code was very good; I am a novice looking for code similar to this. If you don’t mind my suggestion, if you incorporate nic card Mac address to this code, as this is unique. The end user would not be able to pass along the key to their friends etc. Here is a post I found in visual basic, I've tried to rewrite in c# with little success, it may be of help. http://www.codeproject.com/Articles/28550/Protecting-Your-Software-Using-Simple-Serial-Numbe

In your proposed method with the same key we can run the application in different computers. I want that --- one key is just for one PC's.

hi !! thank you for this nice post I want to know how can I test if the product was activated or not in my main Form (or MainWindow in WPF), and I will change my Label text from "unactivated version" to "this is an activated version"!! Thank you

Thank u ... Its very useful to me...

Great concept

I've cracked many programs which used Online Activation. I suggest you: 1-use Unmanaged programs for Lock library and It's accessors. 2-use hashing or encryption methods that are performed by microsoft library. 3-use any post-development recompilation system even that you performed can be better! 4-at the end everytime try to crack your program. It can give you more strength.

Firstly, thanks for your article and your reply. My product runs offline and I'm afraid that my customers have no internet connection. I concern about the algorithm of Microsoft when activating their offline product, as Office, Visual Studio,.... I've studied about MAC address, but until now, it's still confuse. Wait for your new article about this issue...

I see that the customers can buy a key and setup your program for all computers they want, even they can public that key for their friends. How do you solve this problem?

It's so easy to discover keys from Assembly via Deassemblers. So, what's your solution?