PowerShell create WMI Class

Question

I'm trying to create a WMI class and populate it

I can't quite get my head around "Enumeration Available"

I know how to make InvalidExtensions enumerable but I don't understand how to populate this field when creating a WMI instance

I also don't understand how to prefill Possible Enumeration Values

My code so far

$newClass = New-Object System.Management.ManagementClass("root\cimv2", [String]::Empty, $null); 
$newClass["__CLASS"] = "Test"; 
$newClass.Qualifiers.Add("Static", $true)

$newClass.Properties.Add("Username",[System.Management.CimType]::String, $false)
$newClass.Properties["Username"].Qualifiers.Add("Key", $true)

$newClass.Properties.Add("TotalFileCount",[System.Management.CimType]::UInt16, $false)

$newClass.Properties.Add("TotalFolderCount",[System.Management.CimType]::UInt16, $false)

$newClass.Properties.Add("TotalSizeMB",[System.Management.CimType]::UInt16, $false)

$newClass.Properties.Add("InvalidFileNameCount",[System.Management.CimType]::UInt16, $false)

$newClass.Properties.Add("InvalidExtensionCount",[System.Management.CimType]::UInt16, $false)

$newClass.Properties.Add("InvalidExtensions",[System.Management.CimType]::String, $false)
$newClass.Properties["InvalidExtensions"].Qualifiers.Add("Values",$true)

$newClass.Put()

Set-WmiInstance -Class Test -Argument @{Username="testaccount";TotalFileCount="5191";TotalFolderCount="355";TotalSizeMB="3660";InvalidFileNameCount="10";InvalidExtensionCount="2";InvalidExtensions=".appx",".ost"}

Saars · Accepted Answer · 2020-09-16 16:36:02Z

1

I worked out how to add the values

Changed

$newClass.Properties.Add("InvalidExtensions",[System.Management.CimType]::String, $false)

to

$newClass.Properties.Add("InvalidExtensions",[System.Management.CimType]::String,"StringArray")

Then a standard array can be used when adding values

I still don't know how to set possible values in the class properties

answered Sep 16, 2020 at 16:36

Saars

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3 Comments

postanote Over a year ago

Just curious. But why do this in PowerShell? vs just using Visual Studio and the languages there and the specification. What is your use case?

Saars Over a year ago

Have an existing PowerShell script that does auditing, don't want to reinvent the wheel but need to make a new WMI class to store data to be collected by SCCM Long way of doing things I know

postanote Over a year ago

Hummm... yeppers, sure is a long way around the cart... not something I'd ever considered or tried.

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