Finding Cmdlets with Dynamic Parameters

Some cmdlets expose dynamic parameters. They are valid only in certain contexts. Get-ChildItem, for example, exposes -File and -Directory only when the current location is a file system path (and you are at least running PowerShell 3.0).

To find all cmdlets that have dynamic parameters, try this:

#requires -Version 2

$cmdlets = Get-Command -CommandType Cmdlet

$cmdlets.Count

$loaded = $cmdlets |
Where-Object { $_.ImplementingType } 

$loaded.Count

$dynamic = $loaded | 
Where-Object { 
    $cmdlet = New-Object -TypeName $_.ImplementingType.FullName
    $cmdlet -is [System.Management.Automation.IDynamicParameters] 
  }
  
$dynamic.Count

$dynamic | Out-GridView 

You will get back only loaded cmdlets, and only those that have dynamic parameters.

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