Windows Powershell - Rename a list of files using a list from a text document

问题

I tried using the following code to rename a folder of files "C:\www\folderx" using a text list "..\list.txt", but I can't figure out how to get the current file index:

Get-Childitem C:\www\folderx | % {
    $OldName = $_.name;
    $NewName = (GC ..\list.txt)[<CURRENT INDEX SHOULD GO HERE>];
    # Rename-Item -Newname $NewName;
    Write-Output $("Renamed {0} to {1}" -f $OldName,$NewName);
}

来源：https://stackoverflow.com/questions/17256501/windows-powershell-rename-a-list-of-files-using-a-list-from-a-text-document