将文件夹及其所有子文件夹上载到FTP服务器的Powershell脚本有多个错误

Question

嗨，我发现此脚本可以帮助我将包含所有嵌套内容的整个文件夹复制到我的FTP服务器上，该服务器是Azure托管的Windows Server 2012。

这是脚本：

$a = (Get-Host).UI.RawUI
$a.WindowTitle = "Sync Folder To Ftp"

$ftp = "ftp://igtestvm1.cloudapp.net/IQS FTP Content/IQSWS"
$localDirectory = "C:\TeamCity\buildAgent\work\8b19187411566286\IQS Web Server"
$user = "u"
$pass = "p"

$webclient = New-Object System.Net.WebClient 
$webclient.Credentials = New-Object System.Net.NetworkCredential($user,$pass)
$webclient.UsePassive = $False
$Files = get-childitem $localDirectory -recurse -force 
foreach ($File in $Files)
{
    $LocalFile = $File.FullName

    $RemoveDirectory = $LocalFile.Replace($localDirectory,"")
    $ChangeSlashes = $RemoveDirectory.Replace('\', '/')
    $RemoveSpaces = $ChangeSlashes.Trim()
    $RemoteFile = $ftp+$RemoveSpaces
    $uri = New-Object System.Uri($RemoteFile) 
    $webclient.UploadFile($uri, $LocalFile)

    Write-Host "Getting $File from $localDirectory" -Foreground "Red"
    Write-Host "Puting $File to $ftp" -Foreground "Yellow"
} 

Write-Host "Finished Sync to $ftp" -Foreground "Green"

现在，在运行脚本时出现以下错误：

Property 'UsePassive' cannot be found on this object; make sure it exists and is settable

Exception calling "UploadFile" with "2" argument(s): "The remote server returned an error: 227 Entering Passive Mode

Exception calling "UploadFile" with "2" argument(s): "An exception occurred during a WebClient request.

我该如何解决这个问题？