$c1 = Import-Csv .\1222-1.csv $c2 = Import-Csv .\1222-2.csv $h = $c1 | Get-Member | Where-Object {$_.MemberType -eq "NoteProperty"} |Select-Object Name $h = $h.name $e = ("hoge1","hoge2") $h2 = $h | ForEach-Object {if ($_ -notin $e) {$_}} …