VBScript

Traverse Direct Children via FirstChild / NextSibling, or LastChild / PreviousSibling

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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>

VBScript

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

success = 0

set xml = CreateObject("Chilkat.Xml")

success = xml.LoadXmlFile("qa_data/xml/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()
bContinue = xml.LastMethodSuccess
Do While (bContinue = 1)
    outFile.WriteLine(child.Tag & " : " & child.Content)
    ' nextSibling is a Chilkat.Xml
    Set nextSibling = child.NextSibling()
    bContinue = child.LastMethodSuccess

    ' 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:
success = xml.GetParent2()

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

' Iterate in reverse order using LastChild / PreviousSibling
' child is a Chilkat.Xml
Set child = xml.LastChild()
bContinue = xml.LastMethodSuccess
Do While (bContinue = 1)
    outFile.WriteLine(child.Tag & " : " & child.Content)
    ' prevSibling is a Chilkat.Xml
    Set prevSibling = child.PreviousSibling()
    bContinue = child.LastMethodSuccess

    ' 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:
success = xml.GetParent2()

outFile.Close