列出注册表值的问题 C#

Question

when I try to list registry values it doesn't list all the values. Like when I'm doing:

RegistryKey regKey = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion");

foreach (string vName in regKey.GetValueNames())
{
     Console.WriteLine("Reg values: " + vName);
}

the answer I get is just these:

Reg values: CurrentVersion
Reg values: CurrentBuild
Reg values: SoftwareType
Reg values: CurrentType
Reg values: InstallDate
Reg values: RegisteredOrganization
Reg values: RegisteredOwner
Reg values: SystemRoot
Reg values: InstallationType
Reg values: EditionID
Reg values: ProductName
Reg values: CurrentBuildNumber
Reg values: BuildLab
Reg values: BuildLabEx
Reg values: BuildGUID
Reg values: CSDBuildNumber
Reg values: PathName

I only get 17 lines when (if I look in the registry) 21 lines.

What am I doing wrong? Greatful for every answer.

Answer 1

This is because you're running your application as 32bit, and it is being redirected to the Wow64 node in the registry. You need to either change your application to x64/Anycpu or PInvoke the Windows Registry APIs manually and pass the KEY_WOW64_64KEY option for samDesired in RegOpenKeyEx.

Edit: As posted by a commenter if you don't want to change to AnyCPU/x64 you can pass the KEY_WOW64_64KEY parameter to the .NET functions without resorting to the Windows API as well. See C# Reading the registry: ProductID returns null in x86 targeted app. “Any CPU” works fine