此属性用于 script-parameter,允许将 $null 作为不支持隐式转换的强制参数的参数。 请考虑函数调用 Test,它具有以下参数块,调用方式如下: PowerShell 复制 param ( [parameter(Mandatory = $true)] [AllowNull()] [int[]] $Values ) Test 10, 20, 30 # $values
在会话中NoLanguage运行$ExecutionContext.SessionState.LanguageMode命令时,PowerShell 将返回ScriptsNotAllowed错误消息。 ScriptsNotAllowed:此 runspace 不支持语法。 这可能是因为它处于无语言模式。 查找会话配置的语言模式 使用会话配置文件创建会话配置时,会话配置具有LanguageMode属性。 可以通过获取LanguageMode属性的值...
介绍会话配置文件,用于在会话配置(也称为“终结点”)中定义使用会话配置的会话的环境。 长说明 此信息仅适用于在 Windows 上运行的 PowerShell。 “会话配置文件”是一个包含哈希表的带有 .pssc 文件扩展名的文本文件,哈希表中包含会话配置属性和值。 可以使用会话配置文件来设置会话配置的属性。 这样做将定义使用...
Cannot bind argument to parameter 'Password' because it is null. Cannot bind argument to parameter 'Path' because it is null Cannot bind argument to parameter 'Path' because it is null in ISE Cannot bind argument to parameter xxxxx' because it is an empty string. Cannot bind parameter 'Date...
Within the command or script in which it's used, the InformationAction common parameter overrides the value of the $InformationPreference preference variable, which by default is set to SilentlyContinue. When you use Write-Information in a script with InformationAction, Write-Information values are ...
If the script has parameters, type the parameters and parameter values after the script filename. For example, the following command uses the ServiceName parameter of the Get-ServiceLog script to request a log of WinRM service activity.
I run the script with the –DoSomething parameter, $DoSomething gets set to $True. There’s no need to pass a value to the parameter. Windows PowerShell sets it to $True if you simply include it. This is how switch parameters operate, such as the –recurse parameter of Get-ChildItem....
Also wanted to add: I noticed the "Get-DistributionGroupMember" cmdlet (and maybe others) no longer supports the-ErrorActionparameter. Any idea why and if that can be fixed? Commenting in case anyone else runs into this. --Saul
PS>CommandInvocation(Get-Process): “Get-Process” >> ParameterBinding(Get-Process): name=”Name”; value=”*e*” Handles NPM(K) PM(K) WS(K) VM(M) CPU(s) Id ProcessName ——- —— —– —– —– —— ———– 135 11 2496 7716 4096 2548 Acmengine 2451 121 63952 188004 4096...
$newParameter=‘ [ValidateScript({ if (-not ([IO.FileSystemWatcher].GetEvent($_))) { $possibleEvents = [IO.FileSystemWatcher].GetEvents() | ForEach-Object { $_.Name } throw “$_ is not an event on [IO.FileSystemWatcher]. Possible values are: $possibleEvents” ...