以下示例中的函数在foreach循环内有一个内联注释。 虽然找到这条注释并不困难,但试想一下,要是这个函数包含数百行代码呢? PowerShell functionTest-MrVerboseOutput{ [CmdletBinding()]param( [ValidateNotNullOrEmpty()] [string[]]$ComputerName=$env:COMPUTERNAME)foreach($Computerin$ComputerName) {#Attempting...
[string] [SupportsWildcards] [switch] [timespan] [uint] [uint16] [uint32] [uint64] [ulong] [uri] [ushort] [ValidateCount] [ValidateDrive] [ValidateLength] [ValidateNotNull] [ValidateNotNullOrEmpty] [ValidateNotNullOrWhiteSpace] [ValidatePattern] ...
<logotest><extensions><e>.exe</e><e>.dll</e></extensions><files><f></f></files><dirs></dirs></logotest> 查询.exe 和 .dll结点 Powershell 默认支持的.NET类型如下。 [array],[bool],[byte],[char],[datetime],[decimal],[double],[guid],[hashtable],[int16],[int32],[int],[int...
If you want a function that can take pipeline input or input from a parameter, then theprocessblock needs to handle both cases. For example: PowerShell functionGet-SumOfNumbers{param( [int[]]$Numbers)begin{$retValue=0}process{if($null-ne$Numbers) {foreach($nin$Numbers) {$retValue+=$n...
But if you need to determine whether a variable is $null, you must put $null on the left-hand side of the equality operator. Putting it on the right-hand side doesn't do what you expect. For example, let $a be an array containing null elements: PowerShell Copy $a = 1, 2...
This has significant implications for a function whose parameter has different meaning for$nullversus[string]::empty. In DSC resources, for example, it is natural to pass groups of parameters from the Set and Test functions down through a call stack which eventually makes a system call to manip...
The argument is null or empty. Provide an argument that is not null or empty, and then try the command again. CannotConnect,PSSessionStateBroken Cant access a fileshare through a remote PS Session Cant make work with variable in Get-ADuser command to get UPN Cant return string for msE...
[ValidateNotNullorEmpty()] [System.String]$ServerName, [System.String]$DomainName, [System.String]$CARootName, [System.String]$CAServerFQDN, [System.String]$CertSubject, [System.String]$SMBShare, [Parameter(Mandatory=$true)] [ValidateNotNullorEmpty()] [PsCredential]$Credential) Configuration ...
$colStats = Import-CSV C:\Scripts\Test.txt foreach ($objBatter in $colStats) { $objBatter.Name + " {0:N3}" -f ([int] $objBatter.Hits / $objBatter.AtBats) } Well, we can, sort of. That approach will definitely give us each player’s batting average; what it won’t do, ...
[Environment]::SetEnvironmentVariable("TestVariable",$null,"User") Again, if you use SetEnvironmentVariable the deleted variable might still show up when you call Get-ChildItem, at least until you restart. But take our word for it: the environment variable will no longer exist, as this comma...