Hi

I wrote a PS script which gets registry informations about specific drivers.
Here is the code:
----------------------------------------------------------------
$computer = "nodename1","nodename2"
foreach($nodename in $computer){
$PnP = Get-WMIObject Win32_PnPSignedDriver -computer $nodename
write-host " "
write-host " "
write-host "Objects in node $nodename"
write-host "********************************************"
Foreach ($driver in $PnP){
$devicename = $driver.Devicename
if($devicename.Startswith("Smart Array")){
write-host $devicename
$driver.DriverVersion
write-host "------------------------------"



}
}
}
--------------------------------------------------------------

I get all informations i want but there is still a error which i don't know
how to fix:

Objects in node nodename1
********************************************
Smart Array 5x and 6x Notification Driver
6.4.0.32
-------------------------------------
Smart Array 5300 Controller
5.80.0.32
-------------------------------------
You cannot call a method on a null-valued expression.
At line:9 char:34
+ if($devicename.Startswith <<<< ("Smart Array")){


Objects in node nodename2
********************************************
Smart Array 5x and 6x Notification Driver
6.4.0.32
-------------------------------------
Smart Array 5300 Controller
5.80.0.32
-------------------------------------
You cannot call a method on a null-valued expression.
At line:9 char:34
+ if($devicename.Startswith <<<< ("Smart Array")){

It looks like $devicename is empty at the end and the script wants still
make a loop...
Hope someone can help me getting this error away :-)

greetings

PS: Sorry for my english ;-)

Hi Wilson,

Add a condition statement before calling 'Statwith' method on the
$devicename.

$devicename = $driver.Devicename
if (!$devicename) { continue }
if ($devicename.Startswith("Smart Array"))

Tao Ma

"Wilson" <Wilson@xxxxxx> дÈëÏûÏ¢ÐÂÎÅ:2AF91A85-AF3F-4523-AE91-3E22F172DE3D@xxxxxx

> Hi
>
> I wrote a PS script which gets registry informations about specific
> drivers.
> Here is the code:
> ----------------------------------------------------------------
> $computer = "nodename1","nodename2"
> foreach($nodename in $computer){
> $PnP = Get-WMIObject Win32_PnPSignedDriver -computer $nodename
> write-host " "
> write-host " "
> write-host "Objects in node $nodename"
> write-host "********************************************"
> Foreach ($driver in $PnP){
> $devicename = $driver.Devicename
> if($devicename.Startswith("Smart Array")){
> write-host $devicename
> $driver.DriverVersion
> write-host "------------------------------"
>
> }
> }
> }
> --------------------------------------------------------------
>
> I get all informations i want but there is still a error which i don't
> know
> how to fix:
>
> Objects in node nodename1
> ********************************************
> Smart Array 5x and 6x Notification Driver
> 6.4.0.32
> -------------------------------------
> Smart Array 5300 Controller
> 5.80.0.32
> -------------------------------------
> You cannot call a method on a null-valued expression.
> At line:9 char:34
> + if($devicename.Startswith <<<< ("Smart Array")){
>
>
> Objects in node nodename2
> ********************************************
> Smart Array 5x and 6x Notification Driver
> 6.4.0.32
> -------------------------------------
> Smart Array 5300 Controller
> 5.80.0.32
> -------------------------------------
> You cannot call a method on a null-valued expression.
> At line:9 char:34
> + if($devicename.Startswith <<<< ("Smart Array")){
>
> It looks like $devicename is empty at the end and the script wants still
> make a loop...
> Hope someone can help me getting this error away :-)
>
> greetings
>
> PS: Sorry for my english ;-)

Oh thanks a lot it works now without error

greetings

"Tao Ma" wrote:

> Hi Wilson,
>
> Add a condition statement before calling 'Statwith' method on the
> $devicename.
>
> $devicename = $driver.Devicename
> if (!$devicename) { continue }
> if ($devicename.Startswith("Smart Array"))
>
> Tao Ma
>
> "Wilson" <Wilson@xxxxxx> �´Èë�û�¢�ÂÎÅ:2AF91A85-AF3F-4523-AE91-3E22F172DE3D@xxxxxx

> > Hi
> >
> > I wrote a PS script which gets registry informations about specific
> > drivers.
> > Here is the code:
> > ----------------------------------------------------------------
> > $computer = "nodename1","nodename2"
> > foreach($nodename in $computer){
> > $PnP = Get-WMIObject Win32_PnPSignedDriver -computer $nodename
> > write-host " "
> > write-host " "
> > write-host "Objects in node $nodename"
> > write-host "********************************************"
> > Foreach ($driver in $PnP){
> > $devicename = $driver.Devicename
> > if($devicename.Startswith("Smart Array")){
> > write-host $devicename
> > $driver.DriverVersion
> > write-host "------------------------------"
> >
> > }
> > }
> > }
> > --------------------------------------------------------------
> >
> > I get all informations i want but there is still a error which i don't
> > know
> > how to fix:
> >
> > Objects in node nodename1
> > ********************************************
> > Smart Array 5x and 6x Notification Driver
> > 6.4.0.32
> > -------------------------------------
> > Smart Array 5300 Controller
> > 5.80.0.32
> > -------------------------------------
> > You cannot call a method on a null-valued expression.
> > At line:9 char:34
> > + if($devicename.Startswith <<<< ("Smart Array")){
> >
> >
> > Objects in node nodename2
> > ********************************************
> > Smart Array 5x and 6x Notification Driver
> > 6.4.0.32
> > -------------------------------------
> > Smart Array 5300 Controller
> > 5.80.0.32
> > -------------------------------------
> > You cannot call a method on a null-valued expression.
> > At line:9 char:34
> > + if($devicename.Startswith <<<< ("Smart Array")){
> >
> > It looks like $devicename is empty at the end and the script wants still
> > make a loop...
> > Hope someone can help me getting this error away :-)
> >
> > greetings
> >
> > PS: Sorry for my english ;-)

>
>
>