列舉鍵和鍵值對

列舉金鑰

foreach ($key in $var1.Keys) {
    $value = $var1[$key]
    # or
    $value = $var1.$key 
}

列舉鍵值對

foreach ($keyvaluepair in $var1.GetEnumerator()) {
    $key1 = $_.Key1
    $val1 = $_.Val1
}