Adding an XML node as the first node

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Any help would be greately appreciated. I am trying to figure out a way to add a node to an existing XML file. Here's the situation:

I want to and a new "B" node as the first node - immediately following <A>.
Each time I tried to add the new node, it's appended to the bottom of the node list.
The existing file resembling the following:

<A>

<C />
<C />
<C />


<C />
<C />
<C />


<C />
<C />
<C />

</A>

Posted 9-Oct-11 9:04am

lovinlife045

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DaveAuld 9-Oct-11 15:07pm

Post your code snippet for what you have so far......

3 solutions

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André Kraak · Answer 1 · 2011-10-09T09:13:00

Solution 1

I do not know which language you are using but for System.Xml you use the XmlNode.InsertBefore[^] Method.
See the example in the documentation.

You want to use InserBefore to add a new node before the first child of <A>.

Posted 9-Oct-11 9:13am

André Kraak

v2

lovinlife045 · Answer 2 · 2011-10-09T09:40:00

Reply to Andre. Thanks for the help. I'm using C Sharp.
And when I use InsertBefore I get the following:

"The reference node is not a child of this node."

Here's the code:

string xmlTemp = "C:\\Users\\User\\Documents\\My Projects\\temp.xml";
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(xmlTemp);

XmlNode nodeA = xmlDoc.SelectSingleNode("A");
XmlNode nodeB = xmlDoc.CreateNode(XmlNodeType.Element, "B", null);
XmlNode nodeC = xmlDoc.CreateNode(XmlNodeType.Element, "C", null);

nodeA.InsertBefore(nodeB, xmlDoc.FirstChild);

nodeB.AppendChild(nodeC);

xmlDoc.Save(xmlTemp);

lovinlife045 · Answer 3 · 2011-10-09T10:59:00

Solution 3

Problem solved. Thanks, Andre

Posted 9-Oct-11 10:59am