除上述方法外,还可以在PowerShell中使用IsNullOrEmpty静态方法。 使用-eq运算符检查字符串是否为null或empty -eq运算符用于比较两个值是否相等。您可以将字符串与一个空字符串进行比较,以检查它是否为空。 代码: $str1=""if($str1-eq"") {Write-Host"String is empty"}else{Write-Host"String is not empty"...
將LineNumber的類型變更為ulong在Select-String(#24075) (感謝 @Snowman-25!)) Get-Process:移除-IncludeUserName的系統管理員需求(#21302),感謝@jborean93!) 修正Test-Path -IsValid以檢查無效的路徑和檔案名字符 (#21358) 新增RecommendedAction到ConciseView的錯誤報告(#20826)(感謝 @JustinGrote!)) ...
[string]$ComputerNmae) Write-Output$ComputerNmae} 如果需要参数有多个值,指定类型为string[] functionTest-MrParameterValidation { [CmdletBinding()]param( [Parameter(Mandatory)] [string[]]$ComputerName) Write-Output$ComputerName} 如果需要指定一个默认参数需要将ValidateNotNullOrEmpty参数验证属性与默认值一起...
functionTest-MrParameter{param($ComputerName)Write-Output$ComputerName} 以下函数可查询系统中的所有命令,并返回带有特定参数名称的命令编号。 PowerShell functionGet-MrParameterCount{param( [string[]]$ParameterName)foreach($Parameterin$ParameterName) {$Results=Get-Command-ParameterName$Parameter-ErrorActionSil...
param( [Parameter(Mandatory, ValueFromPipelineByPropertyName)] [string[]]$ComputerName ) 请考虑使用此参数实现函数: PowerShell 复制 function Test-ValueFromPipelineByPropertyName{ param( [Parameter(Mandatory, ValueFromPipelineByPropertyName)] [string[]]$ComputerName ) Write-Output -InputObject...
GitHub Discussions is a feature to enable free and open discussions within the community for topics that are not related to code, unlike issues. This is an experiment we are trying in our repositories, to see if it helps move discussions out of issues so that issues remain actionable by the...
If you typeGet-SmallFileswithout a value, the function assigns 100 to$size. If you provide a value, the function uses that value. Optionally, you can provide a brief help string that describes the default value of your parameter, by adding thePSDefaultValueattribute to the description of your...
Stringify ErrorRecord with empty exception message to empty string (#24949) (Thanks @MatejKafka!) Add completion single/double quote support for -PSEdition parameter for Get-Module (#24971) (Thanks @ArmaanMcleod!) Error when New-Item -Force is passed an invalid directory name (#24936) (Than...
Select-String Select-Xml Send-MailMessage Set-Alias Set-Date Set-MarkdownOption Set-PSBreakpoint Set-TraceSource Set-Variable Show-Command Show-Markdown Sort-Object Start-Sleep Tee-Object Test-Json Trace-Command Unblock-File Unregister-Event ...
If this parameter is empty, all messages are returned. Note: The Search-Mailbox cmdlet returns up to 10000 results per mailbox if a search query is specified. Type:String Position:Named Default value:None Required:False Accept pipeline input:False ...