What is the difference between Registry.LocalMachine and RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Default)?
And if there is no difference at all, what would be the preferred solution to use? For backwards compatibility with older .NET frameworks only the first solution (Registry.LocalMachine) is available but which API will survive in the future?
Registry.LocalMachine solution on MSDN: http://msdn.microsoft.com/en-us/library/microsoft.win32.registry.localmachine.aspx
RegistryKey.OpenBaseKey solution on MSDN: http://msdn.microsoft.com/en-us/library/microsoft.win32.registrykey.openbasekey.aspx
If you just want the default view (Registry64 for a 64-bit app, Registry32 for a 32-bit app), then I'd use the first.