[C#] - Compatible Windows 8 Product Key Decoder

@FreeStyler, you can do all of it in one line like this:

Code:

RegistryKey registry = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, Environment.Is64BitOperatingSystem ? RegistryView.Registry64 : RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\Windows NT\CurrentVersion", false);

Formatted (since nobody likes long lines):

Code:

RegistryKey registry = RegistryKey.OpenBaseKey(
    RegistryHive.LocalMachine, Environment.Is64BitOperatingSystem 
        ? RegistryView.Registry64 
        : RegistryView.Registry32
).OpenSubKey(
    @"SOFTWARE\Microsoft\Windows NT\CurrentVersion", false
);

Not that it really matters, but now we avoid writing @"SOFTWARE\Microsoft\Windows NT\CurrentVersion" twice!

Disclaimer: Code has not been tested.

 

.

 

Does this already include the latest fix that solved issues with some keys?
http://forums.mydigitallife.net/thr...-OEM-need-UEFI?p=510310&viewfull=1#post510310

 

yup should be.

 

...

 

First thanks for this very interesting post.
I am working on using this code in an application but I have a strange problem:
In the above snippet I am always getting null returned for digitalProductId ???
I can access most other values in the same key but impossible to read digitalProductId & digitalProductId4

I have been thinking about access right problem and therefore I have run Visual studio in administrator mode but in did not help? I can read the same digitalProductId from Office keys but I cant from Windows key ???

I am running on a windows 8 system. Any idea about what I am doing wrong?
I am stuck and running out of ideas please help - thanks in advance

 

OK I foun d the problem

For reference I put the solution here.
What is happening is that I am using a 32 bits program on a 64 bit machine!
64-bit Windows mirrors 32-bit content in a way that is transparent to applications. 32-bit applications that use the registry access a mirrored hive inside HKLM\WOW6423Node, which is why I wasn't seeing the expected result when querying a key inside HKLM. Fortunately, .NET 4.0 includes an easy way that lets a 32-bit application see and use the 64-bit registry (and vice-versa).

I just had to change the code as following:

Code:

RegistryKey RegistryBase = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Registry64);
RegistryKey registry = RegistryBase.OpenSubKey(@"SOFTWARE\Microsoft\Windows NT\CurrentVersion\", false);