我有以下脚本在 PowerShell 5 上运行良好
$NetworkChange = New-Object System.Net.NetworkInformation.networkchange
Register-ObjectEvent -InputObject $NetworkChange -EventName NetworkAddressChanged -SourceIdentifier "NetworkChanged" -Action {
Write-Host "network switched"
$LanConnected=@(Get-WmiObject win32_networkadapter -filter "netconnectionstatus = 2" | Where-Object {$_.netconnectionid -like "*Local Area Connection*"})
If($LanConnected){
Get-WmiObject win32_networkadapter -filter "netconnectionstatus = 2" | Where-Object {$_.netconnectionid -like "*Wireless Network Connection*"} | ForEach-Object {$_.disable()}
}
Else {
Get-WmiObject win32_networkadapter | Where-Object {$_.netconnectionid -like "*Wireless Network Connection*"} | ForEach-Object {$_.enable()}
}
}
但是，它在 PowerShell 2 上失败，并出现以下与 New-Object cmdlet 相关的错误
New-Object : Constructor not found. Cannot find an appropriate constructor for type System.Net.NetworkInformation.networkchange.
At line:1 char:11
+ New-Object <<<< System.Net.NetworkInformation.networkchange
+ CategoryInfo : ObjectNotFound: (:) [New-Object], PSArgumentException
+ FullyQualifiedErrorId : CannotFindAppropriateCtor,Microsoft.PowerShell.Commands.NewObjectCommand
知道为什么会失败吗？ PowerShell 2 上的 New-Object cmdlet 是否有不同的语法？
注意：我们的财产仍然在 PowerShell 2 上，因此这场斗争。
提前致谢
Steve
在 PS5 中，这段代码有效：
$NetworkChange = [System.Net.NetworkInformation.NetworkChange]::new()
PS2 说[System.Net.NetworkInformation.NetworkChange] doesn't contain a method named 'new'.所以我们可以通过创建一个变量“经典”的方式来解决这个问题：
New-Variable -Name NetworkChange -Value ([System.Net.NetworkInformation.NetworkChange])
$NetworkChange
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