How to create an collection/array/object/thingy from a bunch of objects for eventual export to CSV.

Question

This is a follow-up to an earlier post (How
to output a bunch of variables into a table.) Now that I can ouput data for a single computer I need to to do the same for a list of computers into a CSV. In more general terms how do I get a bunch of $Computer objects into a single collection/array/object/thingy
with a clever name like $Computers?
# http://ss64.com/ps/get-wmiobject-win32.html
# http://social.technet.microsoft.com/Forums/en-US/da54b6ab-6941-4e45-8697-1d3236ba2154/powershell-number-of-cpu-sockets-wmi-query?forum=winserverpowershell
# http://serverfault.com/questions/10328/determine-cpu-processors-vs-sockets-though-wmi
# http://social.technet.microsoft.com/Forums/windowsserver/en-US/8443fcfd-5a0b-4c3d-bda7-26df83d2ee92/how-to-output-a-bunch-of-variables-into-a-table?forum=winserverpowershell
Param(
[Parameter(Mandatory=$false,ValueFromPipeline=$true)]
[string]$ComputerName = $env:COMPUTERNAME,
[Parameter(Mandatory=$false,ValueFromPipeline=$false)]
[ValidateScript(
If ( $_ -ne $null ) { Test-Path $_ }
[String]$ComputerListFile
Function Get-Computer
Param(
[string]$ComputerName
$Win32_PingStatus = $null
$Win32_PingStatus_Result = $null
$Win32_OperatingSystem = $null
$Win32_Processor = $null
$Win32_PhysicalMemory = $null
$Win32_ComputerSystem = $null
$Win32_BIOS = $null
$Computer = $null
$Win32_PingStatus = "select * from Win32_PingStatus where address = '$ComputerName'"
$Win32_PingStatus_Result = Get-WmiObject -query $Win32_PingStatus
If ( $Win32_PingStatus_Result.protocoladdress )
"$ComputerName ping succeeded."
$Win32_OperatingSystem = Get-WmiObject Win32_OperatingSystem -computer $ComputerName -ErrorAction SilentlyContinue
If ( $Win32_OperatingSystem -eq $null)
"$ComputerName WMI failed."
} Else {
"$ComputerName WMI succeeded."
$Win32_Processor = [object[]]$(Get-WmiObject Win32_Processor -computer $ComputerName)
$Win32_PhysicalMemory = [object[]]$(Get-WmiObject Win32_PhysicalMemory -computer $ComputerName)
$Win32_ComputerSystem = Get-WmiObject Win32_ComputerSystem -computer $ComputerName
$Win32_BIOS = Get-WmiObject Win32_BIOS -computer $ComputerName
$Computer = New-Object -Type PSObject -Property @{
Name = $Win32_OperatingSystem.CSName
Win32_BIOS_SerialNumber = [string]$Win32_BIOS.SerialNumber
Win32_ComputerSystem_Manufacturer = [string]$Win32_ComputerSystem.Manufacturer
Win32_ComputerSystem_Model = [string]$Win32_ComputerSystem.Model
#Win32_ComputerSystem_NumberOfLogicalProcessors = [int32]$Win32_ComputerSystem.NumberOfLogicalProcessors
#Win32_ComputerSystem_NumberOfProcessors = [int32]$Win32_ComputerSystem.NumberOfProcessors
Win32_ComputerSystem_TotalPhysicalMemory = [long]$Win32_ComputerSystem.TotalPhysicalMemory
Win32_ComputerSystem_TotalPhysicalMemory_GB = [float]($Win32_ComputerSystem.TotalPhysicalMemory / (1024*1024*1024))
Win32_OperatingSystem_Caption = [string]$Win32_OperatingSystem.Caption
Win32_OperatingSystem_CSName = [string]$Win32_OperatingSystem.CSName
#Win32_OperatingSystem_OSArchitecture = [string]$Win32_OperatingSystem.OSArchitecture
#Win32_OperatingSystem_SerialNumber = [string]$Win32_OperatingSystem.SerialNumber
Win32_OperatingSystem_ServicePackVersion = [string]$Win32_OperatingSystem.ServicePackMajorVersion + "." + [string]$Win32_OperatingSystem.ServicePackMinorVersion
Win32_PhysicalMemory_Capacity = ($Win32_PhysicalMemory | ForEach-Object { $_.Capacity } | Measure-Object -Sum).sum
Win32_PhysicalMemory_Capacity_GB = (($Win32_PhysicalMemory | ForEach-Object { $_.Capacity } | Measure-Object -Sum).sum / (1024*1024*1024))
Win32_Processor_Count = [int]$Win32_Processor.Count
Win32_Processor_NumberOfCores = [string]$Win32_Processor[0].NumberOfCores
Win32_Processor_NumberOfLogicalProcessors = [string]$Win32_Processor[0].NumberOfLogicalProcessors
#Win32_Processor_Description = [string]$Win32_Processor[0].Description
Win32_Processor_Manufacturer = [string]$Win32_Processor[0].Manufacturer
Win32_Processor_Name = [string]$Win32_Processor[0].Name
} ## end new-object
$Computer
} Else {
"$ComputerName ping failed."
$ComputerNameMgmt = $ComputerName + "-mgmt"
$Win32_PingStatus = "select * from Win32_PingStatus where address = '$ComputerNameMgmt'"
$Win32_PingStatus_Result = Get-WmiObject -query $Win32_PingStatus
If ( $Win32_PingStatus_Result.protocoladdress )
"$ComputerNameMgmt ping succeded."
} Else {
"$ComputerNameMgmt ping failed."
"$(Get-Date -Format o) Starting script $($MyInvocation.MyCommand.Name)"
If ( $ComputerListFile -eq $null -or $ComputerListFile.Length -eq 0 )
"Processing computer $ComputerName"
Get-Computer( $ComputerName )
} Else {
"Processing computer list $ComputerList"
$ComputerList = Get-Content $ComputerListFile
$Computers = @{}
$Results = @()
ForEach( $ComputerListMember in $ComputerList )
"$(Get-Date -Format o) $ComputerListMember"
# Get-Computer( $ComputerListMember ) | Add-Member -InputObject $Computers -MemberType NoteProperty -Name $_
# http://social.technet.microsoft.com/Forums/windowsserver/en-US/e7d602a9-a808-4bbc-b6d6-dc78079aafc9/powershell-to-ping-computers
# $Compuers += New-Object PSObject -Property $Props
# $Computers += New-Object PSObject -Property Get-Computer( $ComputerListMember )
Get-Computer( $ComputerListMember )
"$(Get-Date -Format o) Ending script $($MyInvocation.MyCommand.Name)"
If I try something like this:
Get-Computer( $ComputerListMember ) | Add-Member -InputObject $Computers -MemberType NoteProperty -Name $_
I get the following, even though $_.Name is not null.
Add-Member : Cannot bind argument to parameter 'Name' because it is null.
At <path to my script>Get-Hardware_Memory_OSVersion_CPU_Cores_ver04_sanitized.ps1:111 char:107
+ Get-Computer( $ComputerListMember ) | Add-Member -InputObject $Computers -MemberType NoteProperty -Name <<<< $_
+ CategoryInfo : InvalidData: (:) [Add-Member], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.AddMemberCommand
Or if I try this:
$Computers += New-Object PSObject -Property Get-Computer( $ComputerListMember )
I get this:
New-Object : Cannot bind parameter 'Property'. Cannot convert the "Get-Computer" value of type "System.String" to type "System.Collections.Hashtable".
At <path to my script>Get-Hardware_Memory_OSVersion_CPU_Cores_ver04_sanitized.ps1:114 char:47
+ $Computers += New-Object PSObject -Property <<<< Get-Computer( $ComputerListMember )
+ CategoryInfo : InvalidArgument: (:) [New-Object], ParameterBindingException
+ FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.PowerShell.Commands.NewObjectCommand

Answer 1

Hi Aenagy,
If you want to combine all the computers' information to a single array, and add the property computername in the output, please also try the script below, which I make a little modification of the function Get-Computer, pleaese make sure the account running
the script has the admin permission of the remote computers, or you need to privide cridentials in get-wmiobject, also note I haven't tested:
$output = @()#to output information of the all the computers
ForEach( $ComputerName in $ComputerList ){#loop all the computers
$Win32_PingStatus = "select * from Win32_PingStatus where address = '$ComputerName'"
$Win32_PingStatus_Result = Get-WmiObject -query $Win32_PingStatus
If ( $Win32_PingStatus_Result.protocoladdress )
"$ComputerName ping succeeded."
$Win32_OperatingSystem = Get-WmiObject Win32_OperatingSystem -computer $ComputerName -ErrorAction SilentlyContinue
If ( $Win32_OperatingSystem -eq $null)
"$ComputerName WMI failed."
Else {
"$ComputerName WMI succeeded."
$Win32_Processor = [object[]]$(Get-WmiObject Win32_Processor -computer $ComputerName)
$Win32_PhysicalMemory = [object[]]$(Get-WmiObject Win32_PhysicalMemory -computer $ComputerName)
$Win32_ComputerSystem = Get-WmiObject Win32_ComputerSystem -computer $ComputerName
$Win32_BIOS = Get-WmiObject Win32_BIOS -computer $ComputerName
$Computer = New-Object -Type PSObject -Property @{
Computername = $ComputerName #add the property computername
Name = $Win32_OperatingSystem.CSName
Win32_BIOS_SerialNumber = [string]$Win32_BIOS.SerialNumber
Win32_ComputerSystem_Manufacturer = [string]$Win32_ComputerSystem.Manufacturer
Win32_ComputerSystem_Model = [string]$Win32_ComputerSystem.Model
#Win32_ComputerSystem_NumberOfLogicalProcessors = [int32]$Win32_ComputerSystem.NumberOfLogicalProcessors
#Win32_ComputerSystem_NumberOfProcessors = [int32]$Win32_ComputerSystem.NumberOfProcessors
Win32_ComputerSystem_TotalPhysicalMemory = [long]$Win32_ComputerSystem.TotalPhysicalMemory
Win32_ComputerSystem_TotalPhysicalMemory_GB = [float]($Win32_ComputerSystem.TotalPhysicalMemory / (1024*1024*1024))
Win32_OperatingSystem_Caption = [string]$Win32_OperatingSystem.Caption
Win32_OperatingSystem_CSName = [string]$Win32_OperatingSystem.CSName
#Win32_OperatingSystem_OSArchitecture = [string]$Win32_OperatingSystem.OSArchitecture
#Win32_OperatingSystem_SerialNumber = [string]$Win32_OperatingSystem.SerialNumber
Win32_OperatingSystem_ServicePackVersion = [string]$Win32_OperatingSystem.ServicePackMajorVersion + "." + [string]$Win32_OperatingSystem.ServicePackMinorVersion
Win32_PhysicalMemory_Capacity = ($Win32_PhysicalMemory | ForEach-Object { $_.Capacity } | Measure-Object -Sum).sum
Win32_PhysicalMemory_Capacity_GB = (($Win32_PhysicalMemory | ForEach-Object { $_.Capacity } | Measure-Object -Sum).sum / (1024*1024*1024))
Win32_Processor_Count = [int]$Win32_Processor.Count
Win32_Processor_NumberOfCores = [string]$Win32_Processor[0].NumberOfCores
Win32_Processor_NumberOfLogicalProcessors = [string]$Win32_Processor[0].NumberOfLogicalProcessors
#Win32_Processor_Description = [string]$Win32_Processor[0].Description
Win32_Processor_Manufacturer = [string]$Win32_Processor[0].Manufacturer
Win32_Processor_Name = [string]$Win32_Processor[0].Name
} ## end new-object
$output+=$Computer #combine all the "$computer" to "$output"
Else {
"$ComputerName ping failed."
$output
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