powershell - 从两个对象创建对象的最佳方式

Question

我构建了这个程序，它运行良好，大约需要7-9秒钟才能运行和显示。
我想知道，是否有更快/最佳的方式来构建此自定义对象？

如您所见，我希望从Win32_PNPsigneddriver获得所有驱动程序信息，但除此之外，我还根据DeviceID在Win32_PNPentity中添加了其他两个属性(configmanagererrorcode和status)。

这样，最终对象将包含所有驱动程序，并显示使用该驱动程序的设备是否存在错误。

$poste = "COMPUTER1234"

$DriversUp = Get-WmiObject -computername $poste Win32_PNPsigneddriver |
             Where-Object {$_.DeviceName -ne $null} 
$Devices = Get-WmiObject -computername $poste Win32_PNPentity

$DriversDevices = foreach ($driver in $DriversUp) {
    $driver |
        Select-Object DeviceClass, Manufacturer, DeviceName,
            FriendlyName, DriverName, InfName,
            @{name='Status';expression={$Devices | Where-Object {$_.DeviceID -eq "$($driver.DeviceID)"} | Select-Object -ExpandProperty status}},
            @{name='ConfigManagerErrorCode';expression={$Devices | Where-Object {$_.DeviceID -eq "$($driver.DeviceID)"} | Select-Object -ExpandProperty ConfigManagerErrorCode}},
            @{name='DriverDate';expression={[DateTime]::ParseExact(($_.DriverDate).Split('.')[0], "yyyyMMddHHmmss", [System.Globalization.CultureInfo]::InvariantCulture)}},
            DriverVersion
}

$DriversDevices |
    Sort-Object DeviceClass |
    Out-GridView -Title "$poste - Drivers utilisés"

就像我说的，一切都已经很好了。但是，我很好奇是否有更快的方法!

Answer 1

从PowerShell 3.0开始， Get-WmiObject cmdlet已被 Get-CimInstance 取代。

$poste = "COMPUTER1234"
$cimses = New-CimSession -ComputerName $poste
$p = & {$args} DeviceClass Manufacturer DeviceName FriendlyName DriverName `
               InfName DriverVersion DeviceID DriverDate
Get-CimInstance -CimSession $cimses -ClassName Win32_PnPSignedDriver `
                -Property $p -Filter 'DeviceName != NULL' |
  ForEach-Object {
    $dev = Get-CimInstance -CimSession $cimses -ClassName Win32_PnPEntity `
                           -Property Status, ConfigManagerErrorCode `
                           -Filter "PNPDeviceID='$($_.DeviceID.Replace('\', '\\'))'"
    [pscustomobject]@{
      DeviceClass = $_.DeviceClass
      Manufacturer = $_.Manufacturer
      DeviceName = $_.DeviceName
      FriendlyName = $_.FriendlyName
      DriverName = $_.DriverName
      InfName = $_.InfName
      Status = $dev.Status
      ConfigManagerErrorCode = $dev.ConfigManagerErrorCode
      DriverDate = '{0:yyyyMMddHHmmss}' -f $_.DriverDate
      DriverVersion = $_.DriverVersion
    }
  } | Sort-Object DeviceClass | Out-GridView -Title "$poste - Drivers utilisés"
Remove-CimSession -CimSession $cimses

在我的机器上， Win32_PnPSignedDriver.DriverDate成员的类型为 DateTime。

Get-CimClass -ClassName Win32_PnPSignedDriver |
  Select-Object -ExpandProperty CimClassProperties |
  Where-Object Name -eq 'DriverDate' |
  Select-Object CimType | Format-Table -AutoSize

 CimType
 -------
DateTime