cls

# PowerShell RegEx with Groups as result
# Help from https://mcpmag.com/articles/2015/09/30/regex-groups-with-powershell.aspx

$txt1 = $NULL
$res1 = $NULL

$txt1 = "#SCAN#DD-Eingangsrechnung"

#$res1 = ($txt1 | Select-String -pattern "(?:#SCAN#(DD-[a-zA-Z-üÜöÖäÄ]{1,}))" -AllMatches | %{$_.matches} | %{$_.value})

$res1 = ([regex]::Match("$txt1", "(?:#SCAN#(DD-[a-zA-Z-üÜöÖäÄ]{1,}))").Groups[1].Value)

echo $res1