How do you query for WMI namespaces?

Question

So I know about WMI namespaces because I read that they exits and I know I can connect to say:

root\cimv2

My question is what if I didn't know what namespaces were there, how would I go about querying for the available namespaces?

I just sort of want to go exploring the WMI and not have to look up each namespace.

I'm using WBEMtest, but I'll take anything, .NET, winapi.h, what have you.

score 15 · Answer 1 · answered Mar 19 '11 at 15:49

15

I understand that you got your answer but wanted to show how easy it is in PowerShell to get a list of namespaces:

Get-WMIObject -namespace "root" -class "__Namespace" | Select Name

answered Mar 19 '11 at 15:49

ravikanth

24,922
4
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60

score 4 · Accepted Answer · answered Mar 16 '11 at 23:25

To enumerate all the namespaces, you must first connect to the root namespace, query for all the __NAMESPACE instances, and for each instance recursively repeat this process.

check these samples

Delphi

procedure  GetListWMINameSpaces(const RootNameSpace:String;const List :TStrings;ReportException:Boolean=True);//recursive function
var
  objSWbemLocator : OleVariant;
  objWMIService   : OleVariant;
  colItems        : OLEVariant;
  colItem         : OLEVariant;
  oEnum           : IEnumvariant;
  iValue          : LongWord;
  sValue          : string;
begin
 try
  objSWbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  objWMIService   := objSWbemLocator.ConnectServer(wbemLocalhost, RootNameSpace, '', '');
  colItems        := objWMIService.InstancesOf('__NAMESPACE');
  oEnum           := IUnknown(colItems._NewEnum) as IEnumVariant;
  while oEnum.Next(1, colItem, iValue) = 0 do
  begin
    sValue:=VarStrNull(colItem.Name);
    colItem:=Unassigned;
    List.Add(RootNameSpace+'\'+sValue);
    GetListWMINameSpaces(RootNameSpace+'\'+sValue,List);//recursive
  end;
 except
     if ReportException then
     raise;
 end;
end;

VbScript

strComputer = "."
Call EnumNameSpaces("root")

Sub EnumNameSpaces(strNameSpace)
    WScript.Echo strNameSpace
    Set objWMIService = GetObject("winmgmts:\\" & strComputer & _
        "\" & strNameSpace)
    Set colNameSpaces = objWMIService.InstancesOf("__NAMESPACE")
    For Each objNameSpace In colNameSpaces
        Call EnumNameSpaces(strNameSpace & "\" & objNameSpace.Name)
    Next
End Sub

score 2 · Answer 3 · answered Mar 28 '16 at 05:29

2

For Python (with the requisite WMI and pyWin32 extensions installed):

import wmi
c = wmi.WMI (moniker='//./root')
wql = "SELECT * FROM __NAMESPACE"

for __NAMESPACE in c.query(wql):
    print __NAMESPACE.Name

answered Mar 28 '16 at 05:29

Wade Heisen

21
2

score 1 · Answer 4 · answered Jan 14 '14 at 16:26

To list all the namespace Name property values for all (root) namespaces for a server named server in C# (in LINQPad):

ManagementClass nsClass =
    new ManagementClass(
        new ManagementScope(@"\\server\root"),
        new ManagementPath("__namespace"),
        null);

foreach(ManagementObject ns in nsClass.GetInstances())
{
    ns["Name"].Dump();
}

Note that the Dump method just outputs a value; if you're not using LINQPad you'd want to do something else with the Name property value.

score 1 · Answer 5 · answered May 18 '16 at 08:58

1

Use Get-CimInstance -Query "SELECT * FROM __NAMESPACE" -Namespace "root" from powershell.

This also works for Windows Nano Server

answered May 18 '16 at 08:58

Omair

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score 0 · Answer 6 · answered Dec 05 '16 at 07:54

You can use VBScript to get all Namespaces from root.

Here is the sample script

On Error Resume Next
strComputer = "." 
Wscript.Echo "-----------------------------------"
Wscript.Echo "Namespaces"
Wscript.Echo "-----------------------------------"
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root") 
Set colItems = objWMIService.ExecQuery( _
    "SELECT * FROM __NAMESPACE",,48) 
For Each objItem in colItems 
    Wscript.Echo "Name: " & objItem.Name
Next

Expected output

Microsoft (R) Windows Script Host Version 5.8
Copyright (C) Microsoft Corporation. All rights reserved.

-----------------------------------
Namespaces
-----------------------------------
Name: subscription
Name: DEFAULT
Name: MicrosoftWmiNet
Name: CIMV2
Name: Cli
Name: nap
Name: MicrosoftIISv2
Name: SECURITY
Name: SecurityCenter2
Name: RSOP
Name: WebAdministration
Name: WMI
Name: OpenHardwareMonitor
Name: directory
Name: Policy
Name: Interop
Name: ServiceModel
Name: SecurityCenter
Name: Microsoft
Name: aspnet

How do you query for WMI namespaces?

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