Question

using XML SelectNodes and appendChild but need appendSibling

Asked by: rrowles2000

Hi, I'm trying to add a node to some XML, but can't quite get what I'm after. I can add a child using append child, I really want to add the node as a sibling after the node I've selected.
For example with the code below I'd like to find the node with id="1b", then insert a node under it as 1c as 1b's sibling. Also, if the node should be on the top level, finding the node qith id="4" I should be able to use the same code to insert id="5".
Thanks in advance.

For Each objParent In objXML.documentElement.selectNodes("//item[@id='"&id&"']")
      Set objChild = objXML.createNode(1, "wibble", "")
      'Set objAttr = objXML.createAttribute(attr)
      'objChild.setAttribute attr, val
      objParent.appendChild(objChild)
    Next
 
===================
XML
===================
 
<?xml version="1.0"?>
<tree id="0">
	<item  id="1">
		<item id="1a"/>
		<item id="1b"/>
		<item id="1d"/>
		<item id="1e"/>
	</item>
	<item id="2"/>
	<item id="3"/>
	<item id="4"/>
</tree>

                                  
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Asked On
2009-08-20 at 07:57:58ID24668413
Tags

XML SelectNodes appendChild

Topics

XPath

,

Extensible Markup Language (XML)

Participating Experts
1
Points
500
Comments
1

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Answers

 

by: abelPosted on 2009-08-21 at 09:19:01ID: 25153357

I've no idea what language you use, but I assume for the discussion VB.NET.

Instead of using the AppendChild, you can use the InsertAfter. This takes the node that you want to insert after and will insert a sibling at that location. Something along these lines:

' inserts objChild after the item with id = 1b '
Dim objChild As XmlNode = objXML.CreateNode(XmlNodeType.Element, "wibble", "")
objXML.InsertAfter(objChild, xmlDoc.SelectSingleNode("//item[@id='1b']"))
                                              
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