對於函式,這三種方法是由函式的 begin、 process和end 區塊表示。 PowerShell 7.3 新增區塊 clean 進程方法。 您不需要在函式中使用任何這些區塊。 如果您沒有使用具名區塊,PowerShell 會將程式代碼 end 放入函式的 區塊中。 不過,如果您使用這些具名區塊中的任何一個 dynamicparam ,或定義區塊,則必須將所有程式...
Begin, Process, End 管道语句块 之前讲过定义函数也可以按照Begin, Process, End的结构,这样尤其可以实时处理管道数据。那能不能也直接通过语句块定义呢? get-process | select -last 5 | & { begin { "开始准备环境" } process { $_.Name } end { "开始清理环境" } } #输出结果为: 开始准备环境 wl...
functionTest-MrPipelineInput{ [CmdletBinding()]param( [Parameter(Mandatory, ValueFromPipelineByPropertyName)] [string[]]$ComputerName)process{Write-Output$ComputerName} } beginandendblocks are optional.beginis specified before theprocessblock and is used to perform any initial work before the items ...
}// End of function BeginProcessing(). 此Cmdlet 也會覆寫 System.Management.Automation.Cmdlet.ProcessRecord 方法來處理使用者在命令行上所做的字元串選取專案。 它會呼叫 private MatchString 方法,以自定義物件的形式寫入字串選取的結果。 C# 複製 protected override void ProcessRecord() { UInt64 ...
Functions can be described as building blocks in PowerShell Functions are often grouped together in modules The functions within a module often share a common purpose or act on a single system 定义函数# 格式# 简单格式# functionGet-Panda{ ...
ForEach-Object [-InputObject <PSObject>] [-Begin <ScriptBlock>] [-Process] <ScriptBlock[]> [-End <ScriptBlock>] [-RemainingScripts <ScriptBlock[]>] [-WhatIf] [-Confirm] [<CommonParameters>]PowerShell Copia ForEach-Object [-InputObject <PSObject>] [-MemberName] <String> [-ArgumentLis...
function <name> { BEGIN { # } PROCESS { # } END { # } } As you can see, this function contains three independent script blocks, named BEGIN, PROCESS, and END. A filtering function—that is, a function designed to work within the pipeline to filter objects—can have any combination ...
Other restrictions such as the BEGIN, PROCESS, and END blocks that you can use in functions impact features that don’t really fit with the workflow concept. The other restriction that can have a big impact is that you can’t use inline comment-based Help. You have to use XML-based ...
as I described in myMarch 2010 column. Typically, I list the comment-based help first, then the CmdletBinding statement, then my parameters, and then the BEGIN{}, PROCESS{}, and END{} scriptblocks. It’salwaysa good idea to include help within your functions—you never know who might be...
PowerShell executes the begin statement when it loads your script, the process statement for each item passed down the pipeline, and the end statement after all pipeline input has been processed. 3. 采用main函数的script语句 function Main