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(PowerShell) Find XML Element where Attribute = Value

See more XML Examples

Finds an XML element at a particular location where an attribute has a specified value.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# We have the following XML and wish to find the value of the time attribute where msg = "alert-from".

# <cdr id="4e5d3e7f41bf6201ad81000c29703270" e164="6207">
#     <user>
#         <grp name="wfln" mode="active"/>
#     </user>
#     <event msg="setup-to" time="287069" e164="5034"/>
#     <event msg="alert-from" time="287069" e164="5034"/>
#     <event msg="rel-to" time="287079" e164="5034"/>
# </cdr>

# First, build the above XML:

$xml = New-Object Chilkat.Xml
$xml.Tag = "cdr"
$xml.AddAttribute("id","4e5d3e7f41bf6201ad81000c29703270")
$xml.AddAttribute("e164","6207")
$xml.UpdateAttrAt("user|grp",$true,"name","wfln")
$xml.UpdateAttrAt("user|grp",$true,"mode","active")
$xml.UpdateAttrAt("event",$true,"msg","setup-to")
$xml.UpdateAttrAt("event",$true,"time","287069")
$xml.UpdateAttrAt("event",$true,"e164","5034")
$xml.UpdateAttrAt("event[1]",$true,"msg","alert-from")
$xml.UpdateAttrAt("event[1]",$true,"time","287069")
$xml.UpdateAttrAt("event[1]",$true,"e164","5034")
$xml.UpdateAttrAt("event[2]",$true,"msg","rel-to")
$xml.UpdateAttrAt("event[2]",$true,"time","287079")
$xml.UpdateAttrAt("event[2]",$true,"e164","5034")

# Show that we have the above XML
$($xml.GetXml())

# Find the element where msg = "alert-from"
# This updates the xml object's reference to the found element (if successful).
$notUsed = $xml.ChilkatPath("/A/event,msg,alert-from|$")
if ($xml.LastMethodSuccess -eq $false) {
    $("Not found.")
    exit
}

# Get the value of the "time" attribute.
$("time = " + $xml.GetAttrValue("time"))

# Restore the xml object's internal reference to the root of the XML document
$xml.GetRoot2()

 

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