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Inserting Xelement in XML file before the root

Posted on 2008-06-26
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Last Modified: 2013-12-16
Hi Experts,
Still learning LINQ and stuck on this one..
I have a pretty simple XML file:

Xdoc document = XDoc.Load("
<root>
<hi>
  <node1></node1>
  <node2></node2>
  <node3></node3>
</hi>
<hi>
  <node1></node1>
  <node2></node2>
  <node3></node3>
</hi>
</root>
");

How can I insert another <hi> XElement before before the </root>. Seems like the only options are to Add right after the <root> or as a child to the <root>.
Thank you in advance.
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Comment
Question by:techsuppoprt
  • 2
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4 Comments
 
LVL 62

Accepted Solution

by:
Fernando Soto earned 400 total points
ID: 21878669
Hi techsuppoprt;

I am on the learning curve with Linq myself. But here is an answer to your question, see sample.

The Add extension method adds the element to the end, should have called this method AddLast, If you want to add it to the front use the AddFirst method.

Fernando
XDocument document = new XDocument(

	new XElement("root",

		new XElement("hi",

			new XElement("node1", ""),

			new XElement("node2", ""),

			new XElement("node3", "")),

		new XElement("hi",

			new XElement("node1", ""),

			new XElement("node2", ""),

			new XElement("node3", ""))

	));

		

/* Result of the code above

<root>

  <hi>

    <node1></node1>

    <node2></node2>

    <node3></node3>

  </hi>

  <hi>

    <node1></node1>

    <node2></node2>

    <node3></node3>

  </hi>

</root>

*/
 

// Add a new element to the end of the tree just before </root>

document.Element("root").Add(new XElement(new XElement("hi",

			new XElement("node1", "Value1"),

			new XElement("node2", "Value2"),

			new XElement("node3", "Value3"))));
 

/* This is the result of the add

<root>

  <hi>

    <node1></node1>

    <node2></node2>

    <node3></node3>

  </hi>

  <hi>

    <node1></node1>

    <node2></node2>

    <node3></node3>

  </hi>

  <hi>

    <node1>Value1</node1>

    <node2>Value2</node2>

    <node3>Value3</node3>

  </hi>

</root>

*/

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0
 
LVL 1

Author Comment

by:techsuppoprt
ID: 21879012
Oh nice, that was simple.

I was trying to do
document.Add(.....)
and all I had to do the name of the "root element I want to add my XElement to... makes perfect sence!
Thanks again Fernando!
0
 
LVL 1

Author Closing Comment

by:techsuppoprt
ID: 31471128
Thanks again
0
 
LVL 62

Expert Comment

by:Fernando Soto
ID: 21880647
Not a problem, always glad to help. ;=)
0

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