Chapters/converting-a-function-to-a-class/Revised.ps1
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class ToolmakingMachineInfo { # Properties [string]$ComputerName [string]$OSVersion [string]$SPVersion [string]$OSBuild [string]$Manufacturer [string]$Model [string]$Procs [string]$Cores [string]$RAM [string]$SysDriveFreeSpace [string]$Arch hidden [string]$Protocol # Constructors ToolmakingMachineInfo([string]$ComputerName, [string]$Protocol) { $this.ComputerName = $ComputerName $this.Protocol = $Protocol $this.Refresh() } Refresh() { if ($this.protocol -eq 'Dcom') { $option = New-CimSessionOption -Protocol Dcom } else { $option = New-CimSessionOption -Protocol Wsman } Try { $params = @{'ComputerName'=$this.Computername 'SessionOption'=$option 'ErrorAction'='Stop'} $session = New-CimSession @params $os_params = @{'ClassName'='Win32_OperatingSystem' 'CimSession'=$session} $os = Get-CimInstance @os_params $cs_params = @{'ClassName'='Win32_ComputerSystem' 'CimSession'=$session} $cs = Get-CimInstance @cs_params $sysdrive = $os.SystemDrive $drive_params = @{'ClassName'='Win32_LogicalDisk' 'Filter'="DeviceId='$sysdrive'" 'CimSession'=$session} $drive = Get-CimInstance @drive_params $proc_params = @{'ClassName'='Win32_Processor' 'CimSession'=$session} $proc = Get-CimInstance @proc_params | Select-Object -first 1 $session | Remove-CimSession $this.OSVersion=$os.version $this.SPVersion=$os.servicepackmajorversion $this.OSBuild=$os.buildnumber $this.Manufacturer=$cs.manufacturer $this.Model=$cs.model $this.Procs=$cs.numberofprocessors $this.Cores=$cs.numberoflogicalprocessors $this.RAM=($cs.totalphysicalmemory / 1GB) $this.Arch=$proc.addresswidth $this.SysDriveFreeSpace=$drive.freespace } Catch { throw "Failed to connect to $this.computername on $this.protocol" } #try/catch } } #class cls $obj = New-Object -TypeName ToolmakingMachineInfo -ArgumentList "localhost","wsman" $obj "Something" | Out-File C:\delete_me.txt $obj.Refresh() $obj |