ValidateSetAttribute:限制变量的取值集合 ValidateNotNullAttribute 例子 ValidateNotNullOrEmptyAttribute 例子,注意@()为一个空数组。
IsNotNullOrEmpty如果值是字串,您可以使用靜態字串函式來檢查值是否為 $null 或同時為空字串。PowerShell 複製 if ( -not [string]::IsNullOrEmpty( $value ) ){...} 當我知道實值類型應該是字串時,我經常會使用這個 。當我檢查 $null 時我是一個防禦腳本手。 每當我呼叫函式並將它指派給變數時,我...
Write-Output$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使用,不过不能与必需(Mandatory)参数一起使用! functionTest-MrParameterValidation { [CmdletBinding()]param( [ValidateNotNullOrEmpty()] [string[]]$ComputerNmae="s1") Write-Output$ComputerNmae} 默认将...
[ValidateNotNullOrEmpty] [ValidateNotNullOrWhiteSpace] [ValidatePattern] [ValidateRange] [ValidateScript] [ValidateSet] [ValidateTrustedData] [ValidateUserDrive] [version] [void] [WildcardPattern] [wmi] [wmiclass] [wmisearcher] [X500DistinguishedName] ...
在Get-Random 上,從 -InputObject 中移除 [ValidateNotNullOrEmpty],以允許空字串 (#10644) 建議系統字串距離演算法不區分大小寫 (#10549) (感謝 @iSazonov!) 修正ForEach-Object -Parallel 輸入處理中的 Null 參考例外狀況 (#10577) (#10468) 新增PowerShell組策略定義 ...
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 msExch...
functionGet-FunctionPosition{ [CmdletBinding()] [OutputType('FunctionPosition')]param( [Parameter(Position =0, Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName)] [ValidateNotNullOrEmpty()] [Alias('PSPath')] [System.String[]]$Path)process{try{$filesToProcess=if($_-is[System.IO.File...
[ValidateNotNull] [ValidateNotNullOrEmpty] [ValidateNotNullOrWhiteSpace] [ValidatePattern] [ValidateRange] [ValidateScript] [ValidateSet] [ValidateTrustedData] [ValidateUserDrive] [version] [void] [WildcardPattern] [wmi] (Windows-only) [wmiclass] (Windows-only) [wmisearcher] (Windows-only) [X50...
emptylines(useful when commenting a region)letg:NERDCommentEmptyLines=1" Enable trimmingoftrailing whitespace when uncommentingletg:NERDTrimTrailingWhitespace=1letg:coc_disable_startup_warning=1" Enable NERDCommenterToggle to check all selected lines is commented or notletg:NERDToggleCheckAllLines=1" ...
that the parameter is not null or empty. This is necessary because it has already been defined as an attribute for the Parameter in PowerShell as part of the Stop-Service cmdlet source code.Executing VALIDATION metadata: [System.Management.Automation.ValidateNotNullOrEmptyA...