public/Invoke-InputBox.ps1

function Invoke-InputBox {
    <#
    .SYNOPSIS
        Provide InputBox() clone for PowerShell
    .DESCRIPTION
        Provide InputBox() clone for PowerShell
    .PARAMETER Title
        Form Title / caption
    .PARAMETER Message
        Form prompt or message text
    .PARAMETER DefaultResponse
        Default value to offer to user.
    .EXAMPLE
        $zip = Invoke-InputBox -Title "Mail Delivery" -Message "Enter ZIP code"
    .EXAMPLE
        $zip = Invoke-InputBox -Title "Mail Delivery" -Message "Enter ZIP code" -DefaultResponse "12345-0987"
    .LINK
        https://github.com/Skatterbrainz/helium/blob/master/docs/Invoke-InputBox.md
    #>

    [CmdletBinding()]
    param (
        [parameter(Mandatory)][string]$Title,
        [parameter(Mandatory)][string]$Message,
        [parameter()][string]$DefaultResponse = ""
    )
    try {
        [void][Reflection.Assembly]::LoadWithPartialName('Microsoft.VisualBasic')
        $text = [Microsoft.VisualBasic.Interaction]::InputBox($Message, $Title, $DefaultResponse)
        return $text
    } catch {
        Write-Error $_.Exception.Message
    }
}