Getting the right nodes

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Klaus Jensen - 27 Sep 2006 11:27 GMT

Hi

Using Xml.XmlDocument I need to get all <rfd:li>-elements below
<photoshop:SupplementalCategories> in the below XML-sample.

I normally use GetElementsByTagName, but since there are other <rfd:id>
elements other places in the doc, I cant.

How do I navigate the tree and get the right nodes?

<x:xmpmeta xmlns:x="adobe:ns:meta/" x:xmptk="3.1.1-112">
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
<rdf:Description rdf:about=""
xmlns:photoshop="http://ns.adobe.com/photoshop/1.0/">
<crs:ToneCurve>
<rdf:Seq>
<rdf:li>0, 0</rdf:li>
<rdf:li>32, 22</rdf:li>
<rdf:li>64, 56</rdf:li>
<rdf:li>128, 128</rdf:li>
<rdf:li>192, 196</rdf:li>
<rdf:li>255, 255</rdf:li>
</rdf:Seq>
</crs:ToneCurve>
<photoshop:SupplementalCategories>
<rdf:Bag>
<rdf:li>Category 1</rdf:li>
<rdf:li>Category 2</rdf:li>
<rdf:li>Category 3</rdf:li>
</rdf:Bag>
</photoshop:SupplementalCategories>
</rdf:Description>
</rdf:Description>
</rdf:RDF>
</x:xmpmeta>

Norm

Reply to this Message

Istvan Loerincz - 27 Sep 2006 14:03 GMT

Hi !

look at this example from MSND Library VS .NET 2003

using System;
using System.IO;
using System.Xml;

public class Sample
{
public static void Main()
{

XmlDocument doc = new XmlDocument();
doc.Load("booksort.xml");

//Create an XmlNamespaceManager for resolving namespaces.
XmlNamespaceManager nsmgr = new
XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("bk", "urn:samples");

//Select and display the value of all the ISBN attributes.
XmlNodeList nodeList;
XmlElement root = doc.DocumentElement;
nodeList = root.SelectNodes("/bookstore/book/@bk:ISBN", nsmgr);
foreach (XmlNode isbn in nodeList){
Console.WriteLine(isbn.Value);
}

}

}

Best Regards,
Istvan

Reply to this Message

Istvan Loerincz - 27 Sep 2006 14:07 GMT

Hi

look at this example from MSDN VS .NET 2003

[C#]
using System;
using System.IO;
using System.Xml;

public class Sample
{
public static void Main()
{

XmlDocument doc = new XmlDocument();
doc.Load("booksort.xml");

//Create an XmlNamespaceManager for resolving namespaces.
XmlNamespaceManager nsmgr = new
XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("bk", "urn:samples");

//Select and display the value of all the ISBN attributes.
XmlNodeList nodeList;
XmlElement root = doc.DocumentElement;
nodeList = root.SelectNodes("/bookstore/book/@bk:ISBN", nsmgr);
foreach (XmlNode isbn in nodeList){
Console.WriteLine(isbn.Value);
}

}

Best Regards,
Istvan

Reply to this Message

Istvan Loerincz - 27 Sep 2006 14:19 GMT

You can select a node with SelectSingleNode(..),
then you can, go down, with FirstChild(),
or go to the next Sibling element ( on the same level)
with NextSibling()
or first FirtChild() then while (...NextSibling != null) through all
child elements from the upper level.

or if you know the right level where your elements are,
you could get the elements with SelectNodes();

Best Regards,
Istvan

Reply to this Message

Klaus Jensen - 28 Sep 2006 10:50 GMT

> You can select a node with SelectSingleNode(..),

Thanks! :)

Reply to this Message

Getting the right nodes

Free Magazines