(Visual FoxPro) 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 XML ActiveX

LOCAL loXml
LOCAL loChild
LOCAL lnSuccess
LOCAL i

loXml = CreateObject('Chilkat.Xml')

*  The sample input XML is available at http://www.chilkatsoft.com/data/get_child.xml
lnSuccess = loXml.LoadXmlFile("get_child.xml")
IF (lnSuccess <> 1) THEN
    ? loXml.LastErrorText
    QUIT
ENDIF

*  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 = " + loXml.NumChildren

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

FOR i = 0 TO loXml.NumChildren - 1
    *   access the tag and content directly by index:
    ? STR(i) + ": " + loXml.GetChildTagByIndex(i) + " : " + loXml.GetChildContentByIndex(i)

NEXT
? "-----"

*  Do the same as the above loop, but get the child node
*  and access the Tag and Content properties:
FOR i = 0 TO loXml.NumChildren - 1
    loChild = loXml.GetChild(i)
    ? STR(i) + ": " + loChild.Tag + " : " + loChild.Content
    RELEASE loChild
NEXT
? "-----"

*  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 TO loXml.NumChildren - 1
    *  Navigate to the Nth child.
    loXml.GetChild2(i)
    ? STR(i) + ": " + loXml.Tag + " : " + loXml.Content
    *  Navigate back up to the parent:
    loXml.GetParent2()
NEXT
? "-----"

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