Question

我构建了这个程序，它运行良好，大约需要7-9秒才能运行和显示。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，我需要来自Win32_PNPsigneddriver的所有驱动程序信息，但除此之外，我还根据以下信息从Win32_PNPentity添加了两个其他属性（configmanagererrorcode和status）：设备ID。

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"

就像我说的那样，一切都已经很好了。但是，我很好奇是否有更快的方法！

Answer 1

瓶颈每次使用Where-Object搜索设备。
以下代码使用Group-Object解决了问题。

$poste = "COMPUTER1234"

$DriversUp = Get-WmiObject -ComputerName $poste Win32_PnPSignedDriver -Filter "DeviceName != NULL"
$Devices = Get-WmiObject -ComputerName $poste Win32_PnPEntity -Property DeviceID,Status,ConfigManagerErrorCode

@($DriversUp; $Devices) | Group-Object DeviceID | Where-Object Count -eq 2 | ForEach-Object {
    $driver, $device = $_.Group
    [pscustomobject]@{
        DeviceClass = $driver.DeviceClass
        Manufacturer = $driver.Manufacturer
        DeviceName = $driver.DeviceName
        FriendlyName = $driver.FriendlyName
        DriverName = $driver.DriverName
        InfName = $driver.InfName
        Status = $device.Status
        ConfigManagerErrorCode = $device.ConfigManagerErrorCode
        DriverDate = [datetime]::ParseExact($driver.DriverDate.Substring(0, 14), "yyyyMMddHHmmss", $null)
        DriverVersion = $driver.DriverVersion
    } 
} | Sort-Object DeviceClass | Out-GridView -Title "$poste - Drivers utilisés"

Answer 2

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

在我的计算机上，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

Answer 3

这就是我要这样做的方式，在性能上并没有太大区别，但是更清晰的IMO：使用ArrayList作为结果，还用Where-Object替换了Get-WmiObject上的-Filter，速度更快了……

$poste = "COMPUTER1234"    
$DriversUp = Get-WmiObject -computername $poste Win32_PNPsigneddriver -Filter "DeviceName != NULL" 
$Devices = Get-WmiObject -computername $poste Win32_PNPentity

$DriversDevices = New-Object System.Collections.ArrayList

    foreach ($driver in $DriversUp) {

    $row = "" | Select DeviceClass,Manufacturer,DeviceName,FriendlyName,DriverName,
    InfName,Status,ConfigManagerErrorCode,DriverDate,DriverVersion

    $row.DeviceClass = $driver.DeviceClass
    $row.Manufacturer = $driver.Manufacturer
    $row.DeviceName = $driver.DeviceName
    $row.DriverName = $driver.DriverName
    $row.InfName = $driver.InfName
    $row.Status = ($Devices | ? {$_.DeviceID -eq $driver.DeviceID}).Status
    $row.ConfigManagerErrorCode = ($Devices | ? {$_.DeviceID -eq $driver.DeviceID}).ConfigManagerErrorCode
    $row.DriverDate = [datetime]::ParseExact(($driver.DriverDate.Split('.')[0]),"yyyyMMddHHmmss",$null)
    $row.DriverVersion = $driver.DriverVersion
    [void]$DriversDevices.Add($row)
    }

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

从两个对象创建对象的最佳方式

3 个答案: