(PowerShell) Iterate over Direct Child Nodes by Index

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>

Download: Chilkat .NET Assemblies

[Reflection.Assembly]::LoadFile("C:\myAssemblies\ChilkatDotNet2.dll")

$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.
    $xml.GetChild2($i)
    $([string]$i + ": " + $xml.Tag
         + " : " + $xml.Content)
    #  Navigate back up to the parent:
    $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.