For Each name As String In processNames '/ The second parameter of this call tells PowerShell to enumerate the '/ array, and send one process at a time to the pipeline. WriteObject(Process.GetProcessesByName(name), True) Next End Sub 'ProcessRecord 代码示例 有关完整的 C# 示...
functionDo-Something{param( [string]$Value) } 只要将参数的类型设置为 astring,该值就永远不能$null。 通常会检查值是否为$null,以了解用户是否提供了值。 PowerShell if($null-ne$Value){...} $Value如果未提供任何值,则为空字符串''。 请改用自动变量$PSBoundParameters.Value。
if($value-is[string] ) {# do something} 如果您正在使用類別或接受管線上的各種物件,您可以使用這個方法。 您可以將服務或服務名稱作為輸入。 然後檢查您是否有服務,並在只有名稱時擷取服務。 PowerShell if($Service-isnot[System.ServiceProcess.ServiceController] ) {$Service=Get-Service-Name$Service}...
To create a strongly typed array, that is, an array that can contain only values of a particular type, cast the variable as an array type, such as string[], long[], or int32[]. To cast an array, precede the variable name with an array type enclosed in brackets. For example:Power...
The String’s the Thing Three Things You Might Not Know About Windows PowerShell Functions Using Windows PowerShell “Here-Strings” Using the Range Operator in Wildcard Queries What Is (and What Isn’t) in Our Array? Windows PowerShell Tip: Adding a Simple Menu to a Windows PowerShell Scr...
the item was manufactured. In a case like that, you might want to look at each character individually, something that’s extremely easy to doifthe entire string has been converted to an array of individual characters. But how can you convert a string value to an array of individual ...
$arr = ipconfig $arr $arr -is [array] \\ 判断是否是数组 You can't use 'macro parameter character #' in math mode arr=@() #创建空数组 $arr=1..10,"string",(get-date)#创建混合数组 PowerShell访问数组 $arr[0..2] PowerShell自定义函数及调用 代码语言:javascript 代码运行次数:0 运行 ...
To provide a help string that describes the default value (100) of the Size parameter in the Get-SmallFiles function, add the PSDefaultValue attribute as shown in the following example. PowerShell Copy function Get-SmallFiles { param ( [PSDefaultValue(Help = '100')] $Size = 100 ) Get-...
Optimize the += operation for a collection when it's an object array (#23901) (Thanks @jborean93!) Allow redirecting to a variable as experimental feature PSRedirectToVariable (#20381) General Cmdlet Updates and Fixes Change type of LineNumber to ulong in Select-String (#24075) (Thanks ...
$dataString=$web_client.DownloadString($url) $build_infoJson=$web_client.DownloadString($url) | ConvertFrom-Json; # simpleforecast forecastday has 10 array object $forecastdays=$build_infoJson.forecast.simpleforecast.forecastday ; $forecastdaysArraryList = New-Object -TypeName System.Collections.Arra...