(VBScript) Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

Demonstrates some ways to iterate over direct child nodes using the FirstChild / NextSibling and LastChild / PreviousSibling methods.

The input XML, available at http://www.chilkatsoft.com/data/fruit.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 XML ActiveX

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

set xml = CreateObject("Chilkat.Xml")

'  The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
success = xml.LoadXmlFile("fruit.xml")
If (success <> 1) Then
    outFile.WriteLine(xml.LastErrorText)
    WScript.Quit
End If

'  Iterate over the direct children by using FirstChild / NextSibling
' child is a Chilkat.Xml
Set child = xml.FirstChild()
Do While Not (child Is Nothing )
    outFile.WriteLine(child.Tag & " : " _
         & child.Content)
    ' nextSibling is a Chilkat.Xml
    Set nextSibling = child.NextSibling()

    ' child is a Chilkat.Xml
    Set child = nextSibling
Loop
outFile.WriteLine("-----")

'  Do the same, but with FirstChild2 / NextSibling2 to avoid
'  creating so many XML object instances:
success = xml.FirstChild2()
Do While success = 1
    outFile.WriteLine(xml.Tag & " : " _
         & xml.Content)
    success = xml.NextSibling2()
Loop
'  Revert back up to the parent:
xml.GetParent2 

outFile.WriteLine("-----")

'  Iterate in reverse order using LastChild / PreviousSibling
' child is a Chilkat.Xml
Set child = xml.LastChild()
Do While Not (child Is Nothing )
    outFile.WriteLine(child.Tag & " : " _
         & child.Content)
    ' prevSibling is a Chilkat.Xml
    Set prevSibling = child.PreviousSibling()

    ' child is a Chilkat.Xml
    Set child = prevSibling
Loop
outFile.WriteLine("-----")

'  Do the same, but with LastChild2 / PreviousSibling2 to avoid
'  creating so many XML object instances:
success = xml.LastChild2()
Do While success = 1
    outFile.WriteLine(xml.Tag & " : " _
         & xml.Content)
    success = xml.PreviousSibling2()
Loop
'  Revert back up to the parent:
xml.GetParent2 

outFile.Close