Changing the Path (environment variable) under VISTA with VB

[Popol]

Hi, i need to change the "PATH" environment variable in a VB program (Visual Studio 2008). Here is the code i use to add the "C:\TEST\" folder at the end of the existing one.

Dim PathVal As String
 
PathVal = Environment.GetEnvironmentVariable("Path", EnvironmentVariableTarget.User)
Environment.SetEnvironmentVariable("Path", PathVal & ";C:\TEST\", EnvironmentVariableTarget.User)

It work great under Windows XP but under Vista it did'nt work at all (even when running as a administrator).

How can i change the "PATH" under Vista?

Thanks in advance...

[Bulldog]

I know this might not help but according to MSDN it 'should' work.

However there is an example here http://msdn.microsoft.com/en-us/library/z46c489x.aspx

[Popol]

By the way it's not even the "SetEnvironmentVariable" that give me a error it's the "GetEnvironmentVariable"...

Let's take this bit of code for exemple:

Dim PathVal As String

On Error GoTo FinTrt

PathVal = System.Environment.GetEnvironmentVariable("Path", EnvironmentVariableTarget.User)

FinTrt:
       If Err.Number <> 0 Then
            MSGBOX(Err.Description)
        Else
            MSGBOX("OK")
        End If

Under XP i receive "OK" and under VISTA here his the error (Soory for the french error but the Vista is a french one)

"La référence d'objet n'est pas définie à une instance d'un objet."

Thanks again...

[techgnome]

is it possible that the language is the problem? What's the french word for "Path" ???? just taking a stab in the dark here.

-tg

[Popol]

I don't think the language is the problem because the XP one is in French too and work perfectly.

[techgnome]

Ah.. ok, well, there goes that theory then.

-tg