Read 64bit registry from 32bit app, in VB.NET

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Hy guys.

I have a serious problem. I'm working on a project and i need to finish it tomorrow.

The problem is that i need to get a registry value, like this:

(32 bit) HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\TeamSpeak 3 Client

(64 bit) HKEY_LOCAL_MACHINE\SOFTWARE\TeamSpeak 3 Client

I read tons of forum topics, blogs, tutorials, and i can't find the answer. The idea is that i need to get the install path for TeamSpeak3 from registry, and for the 32bit app its stored in SOFTWARE\Wow6432Node\TeamSpeak 3 Client, but when i try to get the 64bit app path from SOFTWARE\TeamSpeak 3 Client i get the same path as the 32bit app.

I know i can bypass this by targeting 64bit CPUs. But I NEED to get the 64bit app path from HKEY_LOCAL_MACHINE\SOFTWARE\TeamSpeak 3 Client with my 32bit app.

How can i do that, IN VB.NET?

Please help! Thanks...

Posted 1-Jan-14 23:00pm

dj.3agl3

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2 solutions

Solution 1

64 bit Windows uses registry redirection, that can be override while opening the key for access.
http://msdn.microsoft.com/en-us/library/windows/desktop/aa384129(v=vs.85).aspx[^]
Unfortunately for you .NET hides this so you have to go back to WIN32 API...

Posted 1-Jan-14 23:11pm

Kornfeld Eliyahu Peter

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dj.3agl3 · Accepted Answer · 2014-01-03T08:13:00

I DID IT!!! :)

VB

Dim TS__x64 As Microsoft.Win32.RegistryKey = Microsoft.Win32.RegistryKey.OpenBaseKey _
                                        (Microsoft.Win32.RegistryHive.LocalMachine, Microsoft.Win32.RegistryView.Registry64)
Dim CALE_TS__x64 As String = TS__x64.OpenSubKey("SOFTWARE\TeamSpeak 3 Client").GetValue(Nothing)

Dim TS__x32 As Microsoft.Win32.RegistryKey = Microsoft.Win32.RegistryKey.OpenBaseKey _
                                (Microsoft.Win32.RegistryHive.LocalMachine, Microsoft.Win32.RegistryView.Registry32)
Dim CALE_TS__x32 As String = TS__x32.OpenSubKey("SOFTWARE\Wow6432Node\TeamSpeak 3 Client").GetValue(Nothing)


TextBox1.Text = CALE_TS__x64
TextBox2.Text = CALE_TS__x32