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Use XPath to update XML using PowerShell
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function Edit-XmlNodes { | |
param ( | |
[xml] $doc = $(throw "doc is a required parameter"), | |
[string] $xpath = $(throw "xpath is a required parameter"), | |
[string] $value = $(throw "value is a required parameter"), | |
[bool] $condition = $true | |
) | |
if ($condition -eq $true) { | |
$nodes = $doc.SelectNodes($xpath) | |
foreach ($node in $nodes) { | |
if ($node -ne $null) { | |
if ($node.NodeType -eq "Element") { | |
$node.InnerXml = $value | |
} | |
else { | |
$node.Value = $value | |
} | |
} | |
} | |
} | |
} | |
$xml = [xml](Get-Content "c:\my\file.xml") | |
# <file><foo attribute="bar" attribute2="bar" attribute3="bar" /></file> | |
Edit-XmlNodes $xml -xpath "/file/foo[@attribute='bar']/@attribute" -value "new value" | |
$xml.save("c:\my\file.xml") | |
# <file><foo attribute="new value" attribute2="bar" attribute3="bar" /></file> |
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