Handling registry redirection in .NET

[bgowland]

I've just found out that a 32bit app installed on a 64bit platform has its registry entries stored in a Wow6432node subkey. As a result, when gbpvr is installed on Vista x64, HKLM\Software\devnz doesn't exist (as far as I can tell).

The dvbt radio service can't use the IPluginHelper to get the install directory so I'm currently using...

Code:

RegistryKey GBKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\devnz");

...but this obviously fails on Vista x64.

It seems I can use RegOpenKeyEx and pass flags which should allow the registry redirector to find the key but I can't find a .NET equivalent for RegOpenKeyEx.

Anyone know if there's something buried in a ,NET class library I haven't found yet or do I need to do a DllImport on this (yuck)?

Cheers,
Brian

[whurlston]

I know there is probably a better way but here's what I do:

Code:

RegistryKey GBKey;
try { GBKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\devnz"); }
catch {
  try { GBKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Wow6432node\devnz"); }
  catch { /* fail code here */ }
}

Doing that from memory but you get the idea if my syntax is wrong.

[bgowland]

Thanks - I'll probably use something like that as a temporary measure unless I get time to import the advaip32 stuff. I'd like to avoid it long term though as the MSDN docs warn against direct access in case 'behaviour changes in the future'.

Cheers,
Brian