function_Get-MenuChoice [simplified]

function Get-MenuChoice
    {
    [CmdletBinding ()]
    Param
        (
        [Parameter (
            Mandatory,
            Position = 0
            )]
            [string[]]
            $MenuList,

        [Parameter (
            Position = 1
            )]
            [string]
            $Title,

        [Parameter (
            Position = 2
            )]
            [string]
            $Prompt = 'Please enter a number from the above list or "x" to exit '

        )

    $ValidChoices = 0..$MenuList.GetUpperBound(0) + 'x'
    $Choice = ''
    while ([string]::IsNullOrEmpty($Choice))
        {
        Write-Host $Title
        foreach ($Index in 0..$MenuList.GetUpperBound(0))
            {
            Write-Host ('{0} - {1}' -f $Index, $MenuList[$Index])
            }
        $Choice = Read-Host -Prompt $Prompt
        Write-Host ''

        if ($Choice -notin $ValidChoices)
            {
            [System.Console]::Beep(1000, 300)
            Write-Warning ''
            Write-Warning ('    [ {0} ] is not a valid selection.' -f $Choice)
            Write-Warning '    Please try again.'
            Write-Warning ''

            $Choice = ''

            pause
            }
        }

    # send it out to the caller
    if ($Choice -eq 'x')
        {
        'Exit'
        }
        else
        {
        $Choice
        }
    } # end >>> function Get-MenuChoice


'***** demo usage below *****'

$MenuList = @(
    'An Item'
    'Some Other Item'
    'Middle Menu Item'
    'Yet Another Item'
    'The Last Choice'
    )

$Choice = Get-MenuChoice -MenuList $MenuList

'You chose [ {0} ] giving you [ {1} ].' -f $Choice, $MenuList[$Choice]