Completers/DomainName.Completer.ps1
$param_name = 'DomainName' $cmdlets = Get-Command -Module 'MSOnline' -ParameterName $param_name $argument_completer = @{ CommandName = $cmdlets.Name ParameterName = $param_name ScriptBlock = { param($command_name, $parameter_name, $word_to_complete, $command_ast, $fake_bound_parameter) $item_list = Get-MsolDomain | Where-Object { $PSItem.Name -match $word_to_complete } | ForEach-Object { $completion_text = $PSItem.Name $tool_tip = 'Domains available to the selected tenant.' $list_item_text = $PSItem.Name $completion_result_type = [System.Management.Automation.CompletionResultType]::ParameterValue [System.Management.Automation.CompletionResult]::new($completion_text,$list_item_text,$completion_result_type,$tool_tip) } return $item_list } } Register-ArgumentCompleter @argument_completer |