如何在带有超文本标记的Powershell脚本中设置编码UTF8，以在超文本标记语言页面中显示波斯字符？

Add-Type -TypeDefinition @"
    using System;
    using System.Text;
"@

$utf8 = [System.Text.Encoding]::UTF8

$text = "波斯字符"
$bytes = $utf8.GetBytes($text)

$base64 = [System.Convert]::ToBase64String($bytes)
$html = "<meta http-equiv='Content-Type' content='text/html; charset=utf-8' />"
$html += "<meta http-equiv='Content-Style-Type' content='text/css' />"
$html += "<meta http-equiv='Content-Script-Type' content='text/javascript' />"
$html += "<meta http-equiv='Content-Language' content='en' />"
$html += "<meta http-equiv='Content-Transfer-Encoding' content='base64' />"
$html += "<meta http-equiv='Content-Location' content='data:text/html;charset=utf-8;base64,$base64' />"

# 输出HTML页面
Write-Output $html