Remove XML Node

Question

I have an XML file which contains a node that I wish to remove.

Answer 1

The current object variable ($_) isn't populated in the context of your loop. You need to put the child node into a variable before you can remove it. Also, Just because you name a variable after a particular type of nodes doesn't automagically enumerate the nodes via this variable. You need to actually expand the nodes.

Change this:

foreach ($APPContactDetailsRow in $xml.APPOrganisationUnits.APPOrganisationUnitsRow.APPContactDetails) {
    if ($APPContactDetailsRow.Item('Notes')) {
        $APPContactDetailsRow.RemoveChild($_)
    }
}

into this:

foreach ($APPContactDetailsRow in $xml.APPOrganisationUnits.APPOrganisationUnitsRow.APPContactDetails.APPContactDetailsRow) {
    $n = $APPContactDetailsRow.Item('Notes')
    if ($n) {
        $APPContactDetailsRow.RemoveChild($n)
    }
}

With that said, it'd probably be simpler to select the nodes with an XPath expression and use a pipeline for deleting them:

$xml.SelectNodes('//AppContactDetailsRow/Notes') | ForEach-Object {
    $_.ParentNode.RemoveChild($_)
}