Jan 23, 2025 · Learn how to create reusable PowerShell functions, implement best practices, and avoid common pitfalls in function design, error handling, and parameter validation.

Function syntax. Functions are defined using the following syntax: function [<scope:>]<name> { param([type]$Parameter1 [,[type]$Parameter2]) dynamicparam {<statement list>} begin …

Feb 25, 2025 · Parameters are variables declared in the param() statement of a function or script block. You can use the optional [Parameter()] attribute alone or in combination with the …

One important use of the if statement is to check for error conditions before you run into errors. A good example is to check if a folder already exists before you try to create it. if ( -not (Test …

Jan 19, 2024 · There are two ways to get the syntax for a command: Get-Help and Get-Command. Get-Command. The Get-Command command can be used to get information …

Jun 27, 2024 · The term "PowerShell command" describes any command in PowerShell, regardless of whether it's a cmdlet, function, or alias. You can also run operating system …

This topic includes examples that demonstrate how to use comment-based help for scripts and functions. Example 1: Comment-based Help for a Function. The following sample function …

Jan 19, 2024 · In PowerShell, the results of each statement are returned as output, even without a statement that contains the return keyword. Languages like C or C# return only the value or …

Jan 3, 2025 · Advanced functions allow you create cmdlets that are written as a PowerShell function. Advanced functions make it easier to create cmdlets without having to write and …

May 8, 2025 · A PowerShell Azure function (function) is represented as a PowerShell script that executes when triggered. Each function script has a related function.json file that defines how …