B4X

Find Direct Child with Specific Tag

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Demonstrates how to find a direct child having a specific tag.

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>

B4X

Dim success As Boolean = False

Dim xml As ChilkatXml
xml.Initialize

'  The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
success = xml.LoadXmlFile("qa_data/xml/fruit.xml")
If success = False Then
    Log(xml.LastErrorText)
    Return
End If


'  Find the direct child node having the tag "meat", and 
'  return a new instance of the XML object referencing the
'  child node, if found.
Dim child As ChilkatXml = xml.FindChild("meat")
If xml.LastMethodSuccess = False Then
    Log("No direct child having the tag " & Chr(34) & "meat" & Chr(34) & " was found.")
Else
    Log("Content = " & child.Content)

End If


'  The same can be accomplished without creating a new 
'  XML object instance.  Instead, the FindChild2 method updates
'  the caller's internal reference to the found child, if successful.
success = xml.FindChild2("meat")
If success = True Then
    '  Success!  The xml object now references the found child.
    Log("Content = " & xml.Content)
    '  Restore the reference back to the parent.
    success = xml.GetParent2
Else
    Log("No direct child having the tag " & Chr(34) & "meat" & Chr(34) & " was found.")
End If