function Test-MrParameterValidation { [CmdletBinding()] param ( [ValidateNotNullOrEmpty()] [string[]]$ComputerName = $env:COMPUTERNAME ) Write-Output $ComputerName } 详细输出 如果要编写复杂的代码,则内联注释非常有用,但除非用户查看代
PowerShellHostName 類型: String <empty string> 本課程模組所需的PowerShell主機名稱。 此名稱是由PowerShell提供。 若要尋找主機程式的名稱,請在程式中輸入:$Host.Name。 範例:PowerShellHostName = 'ConsoleHost' PowerShellHostVersion 類型: Version <empty string> 本課程模組所需的PowerShell主機...
如需變更的完整清單,請參閱 GitHub 存放庫中的CHANGELOG。 如需 .NET 9 的詳細資訊,請參閱 [.NET 9 的新功能][07]。 重大變更 修正Test-Path在使用PathType和日期範圍時的-OlderThan和-NewerThan參數(#20942)(感謝 @ArmaanMcleod!)) 先前,如果-OlderThan一起指定,這個元素會被忽略。
Powershell 默认支持的.NET类型如下。 [array],[bool],[byte],[char],[datetime],[decimal],[double],[guid],[hashtable],[int16],[int32],[int],[int64],[long],[nullable],[psobject],[regex],[sbyte].[scriptblock],[single],[float],[string],[switch],[timespan],[type],[uint16],[uint3...
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 ...
In this example, each object piped to the function is sent to theprocessstatement list. Theprocessstatements run on each object, one object at a time. The$inputautomatic variable is empty when the function reaches theendkeyword. PowerShell ...
This has significant implications for a function whose parameter has different meaning for$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...
Return Array.Empty instead of collection [] (#25137) (Thanks @ArmaanMcleod!)ToolsCheck GH token availability for Get-Changelog (#25133) TestsAdd XUnit test for HandleDoubleAndSingleQuote in CompletionHelpers class (#25181) (Thanks @ArmaanMcleod!)Build...
0, indicating the index number of our default option. In this case, we wantYesto be the default option, so we pass PromptForChoice the value0; that’s becauseYesis the first item in our array of menu options. (And the first item in an array always has the index number 0.) What ...
Using Test-Path to Verify the Existence of an Object When you think of Windows PowerShell it’s probably safe to say that the Test-Path cmdlet isn’t the first thing that pops into your head; it’s probably also safe to say that the Test-Path cmdlet isn’t the 9th thing that pops ...