Add new node to xml tree

Question

I am generating a xml tree:

var root = new XElement("Root");
for(int i =0;i<3;i++)
{ 
   var sub0lvl = new XElement(String.Format("sub{0}",i));
   root.Add(sub0lvl);
   for(int j=0;j<2;j++)
   {
     sub0lvl.Add(new XElement(String.Format("subsub{0}",i)));
   }
}

This code generate follow xml tree:

<Root>
  <sub0>
    <subsub0 />
    <subsub0 />
  </sub0>
  <sub1>
    <subsub1 />
    <subsub1 />
  </sub1>
  <sub2>
    <subsub2 />
    <subsub2 />
  </sub2>
  <sub8>
    <subsub123 />
  </sub8>
</Root>

And i want to add new element to sub1 node using code like that

root.Add(new XElement("sub1",new XElement("subsub123")));

But this code is not work as i wish. It's just add new same node to root. What is the right way to do that?

Jon Skeet · Accepted Answer · 2010-03-26 23:14:19Z

5

Use:

root.Element("sub1").Add(new XElement("subsub123"));

Basically that's finding the existing sub1 element and adding a new sub-element to it, rather than adding a new sub1 element.

answered Mar 26, 2010 at 23:14

Jon Skeet

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