[2005|2.0]WMI output problems...

[Thildemar]

I am working on an app that will pull WMI data from all systems currently on the subnet, I have a class in place that correctly collects a list of currently active IP's and I am then feeding those through this function to get the desired data. However some systems correctly report data while about half of the systems return nothing even though WMI says it connects sucessfully. Can anyone take a look and see if there is something I am doing wrong?

Private Function PullWMI(ByVal Target As String, ByVal Container As String, ByVal Value As String) As String
'target = IP address of target system
'Container = WIN32_XXXXXX
'Value = desired value from container
        'WMI delare
        Dim Rtrn As String = ""
        Try
            Dim query As New SelectQuery(Container)
            Dim ms As New System.Management.ManagementScope("\\" & Target & "\root\cimv2")
            ms.Connect()
            If ms.IsConnected = False Then
                Exit Try
            End If
            Dim searcher As New ManagementObjectSearcher(ms, query)
            Dim results As ManagementObjectCollection = searcher.Get
            Dim enumerator As ManagementObjectCollection.ManagementObjectEnumerator = results.GetEnumerator
            enumerator.MoveNext()
            Dim properties As ManagementObject = enumerator.Current
            'pass var delare/set
            If properties(Value) <> Nothing Then ' keeps returning as Nothing...???
                Rtrn = properties(Value).ToString
            Else
                Rtrn = ""
            End If
            searcher.Dispose()
            results.Dispose()
            enumerator.Dispose()
            properties.Dispose()
        Catch ex As Exception
            Rtrn = ""
            ErrMsg = ex.Message.ToString
            HasErr = True
            Exit Try
        End Try
        'return var
        Return Rtrn
    End Function
End Class

As you can see in the code if ms.connect fails it would not enter the rest of the code, on top of that this is running inside a thread and it it takes over 500ms it will return an error (yes I have tried it otside a thread with the same results).