MshObject and Methods that take object

re: MshObject and Methods that take object

Thomas Lee — Sun, 04 Sep 2005 13:08:50 GMT

Here's what I get when I try this:

[C:\]: $key= get-item .
[C:\]: $hash=@()
[C:\]: $hash[$key]='foo'
: Array assignment to [C:\] failed: Specified cast is not valid.
At line:1 char:7
+ $hash[$ <<<< key]='foo'

Am I missing something?

re: MshObject and Methods that take object

Marcel — Sun, 04 Sep 2005 23:50:19 GMT

The line where you are creating the hashtable is wrong.
$hash = @(); # will create an empty array.
$hash = @{}; # will create an empty hashtable.

re: MshObject and Methods that take object (WMI method problem)

MOW — Mon, 26 Sep 2005 14:07:43 GMT

Calling Methods on WMI Object

this script keeps saying there is no Uninstall Method in win32_Product (there is!)

-------------

$computer="LocalHost"

$Progs=$(get-wmiobject win32_Product -computer $computer)

foreach ($p in $Progs) {

If ($P.Caption -eq "MowTool Setup")
{
"Prog $($p.Caption) Found"

$R = $p.baseobject.Uninstall()
" Return $($R) "
}
Else
{
"Progs $($p.Caption) Skipped"
}
} #end foreach
--------

This Vbscript Version Does Work

--------
Computer = "."

Set objWMIService = GetObject("winmgmts:\\" & Computer & "\root\cimv2")
Set colItem = objWMIService.ExecQuery("Select * from Win32_Product")

For each objItem in colItem
if objItem.Caption = "MowTool Setup" then
wscript.echo "Found " & objItem.Caption
objItem.Uninstall()
else
wscript.echo "skipped " & objItem.Caption
end if
Next

---------

Where is the method gone in the MSH version ?

someone got a clue ?

greetings /\/\o\/\/

re: MshObject and Methods that take object

/\/\o\/\/ — Tue, 27 Sep 2005 13:58:29 GMT

answer from m.p.s.scripting newsgroup :

MSH does not currently support invoking WMI class methods directly.

You can still call them by changing the line:
$R = $p.baseobject.Uninstall()
into:
$R = $p.InvokeMethod("Uninstall", $null)

gr /\/\o\/\/

re: MshObject and Methods that take object

Keith Hill — Thu, 17 Nov 2005 08:06:29 GMT

>> $hash.ContainsKey($key)

That's unfortunate since this type of problem can really trip up folks and can be hard to debug. Too bad there isn't a better solution.