Syntax <condition> ? <if-true> : <if-false> 三元运算符的行为类似于简化if-else语句。 计算<condition>表达式,并将结果转换为布尔值,以确定接下来应计算哪个分支: 如果<condition>表达式为 true,则执行<if-true>表达式 如果<condition>表达式为 false,则执行<if-false>表达式 ...
Syntax 复制 script-file: script-block module-file: script-block interactive-input: script-block data-file: statement-list B.2.2 语句 Syntax 复制 script-block: param-block~opt~ statement-terminators~opt~ script-block-body~opt~ param-block: new-lines~opt~ attribute-list~opt~ new-lines~opt...
Syntax复制 <statement> {-AND | -OR | -XOR} <statement> {! | -NOT} <statement> 使用逻辑运算符的语句返回布尔值 (TRUE 或 FALSE) 值。 PowerShell 逻辑运算符仅计算确定语句真实值所需的语句。 如果包含 和 运算符的语句中的左操作数为 FALSE,则不计算右操作数。 如果包含 或 语句的语句中的左操...
statement makes a WMI call to remote eystem to see if the WinRM service is running and if it isn't running it starts the service so the PSSession can be run $restartPSSession = $false $regservPSSession = Get-WmiObject -ComputerName $_ -Class Win32_Service -Filter "Name='WinRM...
match, theGet-ChildItemcommand returns nothing and assigns nothing to$textFiles, which is considered$falsein a boolean context. If one or moreFileInfoobjects are assigned to$textFiles, the conditional evaluates to$true. You can work with the value of$textFilesin the body of theifstatement. ...
Syntax Copy function <name> { param ([type]$Parameter1 [,[type]$Parameter2]) <statement list> } You can also define parameters outside the braces without the param keyword, as shown in the following sample syntax: Syntax Copy function <name> [([type]$Parameter1[,[type]$Parameter2...
You got it: the ENTER key and the ESC (Escape) key. Notice the syntax for capturing a keystroke: $objForm.Add_KeyDown({if ($_.KeyCode -eq "Enter") {$x=$objTextBox.Text;$objForm.Close()}}) As you can see, we’re using theAdd_KeyDownmethod to add the ENTER key ($_.KeyCode...
Examples can include non-existent cmdlets, syntax errors that would prevent a cmdlet from running, or other fatal errors. Non-Terminating Error: A non-serious error that allows execution to continue despite the failure. Examples include operational errors such file not found, permissions problems, ...
about_Path_Syntax Describes full and relative path name formats in Windows PowerShell. about_Pipelines Explains how to combine commands into pipelines in Windows PowerShell. about_PowerShell.exe Displays help for the PowerShell.exe command-line tool. ...
If you reject optional cookies, only cookies necessary to provide you the services will be used. You may change your selection by clicking “Manage Cookies” at the bottom of the page. Privacy Statement Third-Party Cookies Accept Reject Manage cookies The future is yours Microsoft Build · ...