PowerShell

Iterate over Direct Child Nodes by Index

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Demonstrates some ways to iterate over direct child nodes by index.

The input XML, available at http://www.chilkatsoft.com/data/get_child.xml, is this:

<root>
    <fruit color="red">apple</fruit>
    <fruit color="green">pear</fruit>
    <veg color="orange">carrot</veg>
    <meat animal="cow">beef</meat>
    <xyz>
        <fruit color="blue">blueberry</fruit>
        <veg color="green">broccoli</veg>
    </xyz>
    <fruit color="purple">grape</fruit>
    <cheese color="yellow">cheddar</cheese>
</root>

PowerShell

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

$success = $false

$xml = New-Object Chilkat.Xml

# The sample input XML is available at http://www.chilkatsoft.com/data/get_child.xml
$success = $xml.LoadXmlFile("get_child.xml")
if ($success -ne $true) {
    $($xml.LastErrorText)
    exit
}

# The NumChildren property contains the number of direct
# child nodes.  Note: The child nodes under "xyz" are NOT
# direct children of "root".  Therefore, the "root" node has
# 7 direct children
$("NumChildren = " + $xml.NumChildren)

# Iterate over the direct children by index. The first child
# is at index 0.

for ($i = 0; $i -le $xml.NumChildren - 1; $i++) {
    #  access the tag and content directly by index:
    $([string]$i + ": " + $xml.GetChildTagByIndex($i) + " : " + $xml.GetChildContentByIndex($i))

}

$("-----")

# Do the same as the above loop, but get the child node
# and access the Tag and Content properties:
for ($i = 0; $i -le $xml.NumChildren - 1; $i++) {
    $child = $xml.GetChild($i)
    $([string]$i + ": " + $child.Tag + " : " + $child.Content)

}

$("-----")

# Do the same as the above loop, but instead of creating
# a new object instance for each child, call GetChild2 to
# update the object's reference instead.
for ($i = 0; $i -le $xml.NumChildren - 1; $i++) {
    # Navigate to the Nth child.  
    $success = $xml.GetChild2($i)
    $([string]$i + ": " + $xml.Tag + " : " + $xml.Content)
    # Navigate back up to the parent:
    $success = $xml.GetParent2()
}

$("-----")

# Notice that the Content of the "xyz" node is empty.  This is correct.
# The "xyz" node has no Content, but 2 direct children