Mastering Windows PowerShell Scripting - Third Edition

Using Register-ArgumentCompleter

The Register-ArgumentCompleter command has two advantages over the ArgumentCompleter attribute. First, it can be used to set an argument-completer for a number of parameters across a number of commands at once. And second, it can create argument-completers for native commands; for example, when used as an alternative to the ArgumentCompleter attribute, the command is used as follows:

function Test-ArgumentCompleter {    [CmdletBinding()]    param (        [Parameter(Mandatory)]        $Action    )}$params = @{    CommandName   = 'Test-ArgumentCompleter'    ParameterName = 'Action'    ScriptBlock   = {        param ( $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameter ) $possibleValues = 'Start', 'Stop', 'Create', 'Delete' ...