In PowerShell, can Test-Path (or something else) be used to validate multiple files when declaring a string array parameter

Question

I have a function that accepts a string array parameter of files and I would like to use Test-Path (or something else) to ensure that all the files in the string array param

Answer 1

You can use ValidateScript

param(
[parameter()]
[ValidateScript({Test-Path $_ })]
[string[]]$paths
)

For more documentation on parameter validation visit about_Functions_Advanced_Parameters