Question

I’d like to call a PowerShell script this way :
script.ps1 -path mypath\to\files\ -days 6 -hours 0

To validate the command line arguments, I can either do it by hand, either rely on the param syntax :

Param (
    [Parameter(Mandatory=$true )] [string] $path,
    [Parameter(Mandatory=$false)] [int]    $days,
    [Parameter(Mandatory=$false)] [int]    $hours
)

 

 

If I use the param syntax :

• the param definition must be the first line in the script (excluding comments). Okay, not a problem for me

• in case of incorrect parameters, I can’t catch the error (for example to display a custom error message)

   

I’d like to display a custom error message when the script is called with wrong parameters.
Is it possible, and how, to catch the exception in case of parameter error ?

Answer 1

So okay, it is not possible to use param AND to catch the related exceptions.