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JonBMN

WMI Object Length

16 posts in this topic

I'm trying to get the length of the WMI object I have created. I've tried using .count() and .length() to no avail. Can anyone shed some light on maybe something I'm missing?

Local $oWMIService = ObjGet("winmgmts:\\localhost\root\CIMV2")
If @error Then Return SetError(@error, 0, "")
Local $oItems = $oWMIService.ExecQuery("SELECT * FROM Win32_PnPEntity WHERE Name LIKE '%(COM%)'", "WQL", 48)
MsgBox(0, "", "Number of Ports: " & $oItems)

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#2 ·  Posted (edited)

Hi,
 
Maybe like this :

Local $oWMIService = ObjGet("winmgmts:\\localhost\root\CIMV2")
If @error Then Return SetError(@error, 0, "")
Local $oItems = $oWMIService.ExecQuery("SELECT * FROM Win32_PnPEntity WHERE Name LIKE '%(COM%)'", "WQL", 48)
 
Local $iCount = 0
For $oItem In $oItems
    $iCount += 1
Next
 
MsgBox(0, "", "Number of Ports: " & $iCount)

_
Br, FireFox.

Edited by FireFox

 

OS : Win XP SP2 (32 bits) / Win 7 SP1 (64 bits) / Win 8 (64 bits) | Autoit version: latest stable / beta.
Hardware : Intel(R) Core(TM) i5-2400 CPU @ 3.10Ghz / 8 GiB RAM DDR3.

My UDFs : Skype UDF | TrayIconEx UDF | GUI Panel UDF | Excel XML UDF | Is_Pressed_UDF

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#3 ·  Posted (edited)

Hi,

 

Maybe like this :

Local $oWMIService = ObjGet("winmgmts:\\localhost\root\CIMV2")
If @error Then Return SetError(@error, 0, "")
Local $oItems = $oWMIService.ExecQuery("SELECT * FROM Win32_PnPEntity WHERE Name LIKE '%(COM%)'", "WQL", 48)
 
Local $iCount = 0
For $oItem In $oItems
    $iCount += 1
Next
 
MsgBox(0, "", "Number of Ports: " & $iCount)

_

Br, FireFox.

 

Yes, that is a solution. Not the solution I was hoping for as I was hoping there would be a method for finding the length, but thank you all the same.

Edited by JonBMN

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JonBMN,

Try this (had to alter the script to make it run and altered the query to get results)...

Local $oWMIService = ObjGet("winmgmts:\\localhost\root\CIMV2")
;If @error Then Return SetError(@error, 0, "")
;Local $oItems = $oWMIService.ExecQuery("SELECT * FROM Win32_PnPEntity WHERE Name LIKE '%(COM%)'", "WQL", 48)
Local $oItems = $oWMIService.ExecQuery("SELECT * FROM Win32_PnPEntity", "WQL") ; use default parms

ConsoleWrite($oItems.count & @LF)

See >this link for an explanation.

kylomas


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Also, is there anyway to filter out certain comports, like bluetooth comports, when reading in through the WMI?

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JonBMN,

Try this (had to alter the script to make it run and altered the query to get results)...

Local $oWMIService = ObjGet("winmgmts:\\localhost\root\CIMV2")
;If @error Then Return SetError(@error, 0, "")
;Local $oItems = $oWMIService.ExecQuery("SELECT * FROM Win32_PnPEntity WHERE Name LIKE '%(COM%)'", "WQL", 48)
Local $oItems = $oWMIService.ExecQuery("SELECT * FROM Win32_PnPEntity", "WQL") ; use default parms

ConsoleWrite($oItems.count & @LF)

See >this link for an explanation.

kylomas

 

Why did you need to change the ExecQuery?

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I don't have any "%(COM%)" qualifying entries...


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#8 ·  Posted (edited)

I don't have any "%(COM%)" qualifying entries...

 

Ah I see, that's all I want. Also the .count() failed. Am I missing something on using this method?

Edited by JonBMN

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#9 ·  Posted (edited)

It's not "count()", it's "count"

edit: I guess you programmer types would say it's not a method it's a property

Edited by kylomas

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It's not "count()", it's "count"

edit: I guess you programmer types would say it's not a method it's a property

 

Tried that first off and it didn't work and that's why I tried to put the '()'. My bad on the method - property mistake.

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The code that I posted runs on my machine (Vista).  Make sure you remove the last parm ("48") from the query.


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#12 ·  Posted (edited)

Try this...

Local $iCount = _GetComCount()
MsgBox(0, '', 'Number of Ports: ' & $iCount)


Func _GetComCount($sComputer = @ComputerName)
    Local $objWMI = ObjGet('winmgmts:\\' & $sComputer & '\root\CIMV2')
    If @error Or Not IsObj($objWMI) Then Return SetError(@error, 0, '')
    Local $objClass = $objWMI.InstancesOf('Win32_PnPEntity WHERE Name LIKE "%(COM%)"')
    Return $objClass.Count
EndFunc
Edited by ripdad

"The mediocre teacher tells. The Good teacher explains. The superior teacher demonstrates. The great teacher inspires." -William Arthur Ward

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I'm running on windows 7 and XP. Why would you remove the '48' param? It was suggested to help read comports.

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#14 ·  Posted (edited)

Read the link I pointed you to.  It explains the count parameter.

edit: The "48" you are using is probably several parms combined.  You can manipulate them any way you want or use ripdad's example.  They pretty much do the same thing.

Edited by kylomas

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'it's memory foot print is reduced.' which takes out the ability to use .Count. Thanks for the help kylomas.

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#16 ·  Posted (edited)

This thread has additional info.

Edited by kylomas
1 person likes this

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