Import node from one XML to another on PowerShell

Question

I need to copy node with name \"ProjectOptions\" from default.xml to original.xml without modifying anything else:

Original.xml

Answer 1

You try to insert the imported node under the DocumentElement node, but $Child is not a direct child element of that node. You need to call the InsertAfter() method on the parent node of $Child.

Change this:

$xml.DocumentElement.InsertAfter($XML.ImportNode($xmld.SelectSingleNode("//KEY[@ObjectName = 'ProjectOptions']"), $true), $Child)

into this:

$Child.ParentNode.InsertAfter($XML.ImportNode($xmld.SelectSingleNode("//KEY[@ObjectName='ProjectOptions']"), $true), $Child)

and the problem will disappear.

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As a side note, you may want to use an XPath expression instead of dot-notation for selecting $Child:

$Child = $xml.SelectSingleNode('//VALUE[@ObjectName="ShowWelcomeMsg"]')

Answer 2

Found a simple way:

$xmlPO = $xml.SelectNodes("//KEY[@ObjectName='ProjectOptions']")
$xmldPO = $xmld.SelectNodes("//KEY[@ObjectName='ProjectOptions']")
$xmlPO.set_InnerXML($xmldPO.innerXML)
$xml.Save($dpath)​