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Question

say I have an array

$something = @(
"first",
"second"
)

how can I display this to the user as

1. first
2. second
Selection : 

I am able to do this by hash table and manually mapping

@{
1="first"
2="second"
};

and doing the following

$something.Keys | sort |% { Write-Host $_ ")" $something.Item($_) }
[int32]$constuctPayload.Action = Read-Host

but if need to perform this using an array how can I do this. Ie looping over the item and displaying with index for user selection. ?

Answer 1

You could use the IndexOf() method, to find the index in the array.

$something | ForEach-Object {Write-Host "$([Array]::IndexOf($something, $_)). $_ "}

Standard warning about being careful with Write-Host . Also you might want to look into Out-GridView .

Answer 2

Use a for loop to iterate over the elements of the array and prepend each value with the index + 1.

$something = 'first', 'second'

for ($i = 0; $i -lt $something.Count; $i++) {
    Write-Host ('{0}. {1}' -f ($i+1), $something[$i])
}
[int32]$constuctPayload.Action = Read-Host -Prompt 'Selection'

I would recommend using the PromptForChoice() method over Read-Host , though:

$something = '&first', '&second'

$title   = 'The title.'
$msg     = 'Selection?'
$choices = $something | ForEach-Object {
    New-Object Management.Automation.Host.ChoiceDescription $_
}
$options = [Management.Automation.Host.ChoiceDescription[]] $choices
$default = 0

$constuctPayload.Action = $Host.UI.PromptForChoice($title, $msg, $options, $default)