Removing Node from XMLDocument

  • Thread starter Thread starter Stuart Shay
  • Start date Start date
S

Stuart Shay

Hello All

In the following XML Below which is a XMLDocument in my application.

I want to remove the <extensions></extensions> Node completely.

What is the best way to do this, my files are not that large

Thanks
Stuart

<gpx xmlns="http://www.topografix.com/GPX/1/1" version="1.1"
creator="EasyGPS 2.3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.topografix.com/GPX/1/1
http://www.topografix.com/GPX/1/1/gpx.xsd
http://www.topografix.com/GPX/gpx_overlay/0/3
http://www.topografix.com/GPX/gpx_overlay/0/3/gpx_overlay.xsd">
<wpt lat="40.735517" lon="-74.028613">
<time>2006-04-08T00:49:04Z</time>
<name>001</name>
<sym>Waypoint</sym>
<type>Other</type>
<extensions>
<label xmlns="http://www.topografix.com/GPX/gpx_overlay/0/3">
<label_text>001</label_text>
</label>
</extensions>
</wpt>
<wpt lat="40.735517" lon="-74.028613">
<time>2006-04-08T00:49:04Z</time>
<name>002</name>
<sym>Waypoint</sym>
<type>Other</type>
<extensions>
<label xmlns="http://www.topografix.com/GPX/gpx_overlay/0/3">
<label_text>002</label_text>
</label>
</extensions>
</wpt>
</gpx>
 
Here is a solution
public class RemoveNodeEx
{
public static readonly string xml = @"
<gpx>
<wpt lat=""40.735517"" lon=""-74.028613"">
<time>2006-04-08T00:49:04Z</time>
<name>001</name>
<sym>Waypoint</sym>
<type>Other</type>
<extensions>
<label xmlns=""http://www.topografix.com/GPX/gpx_overlay/0/3"">
<label_text>001</label_text>
</label>
</extensions>
</wpt>
<wpt lat=""40.735517"" lon=""-74.028613"">
<time>2006-04-08T00:49:04Z</time>
<name>002</name>
<sym>Waypoint</sym>
<type>Other</type>
<extensions>
<label xmlns=""http://www.topografix.com/GPX/gpx_overlay/0/3"">
<label_text>002</label_text>
</label>
</extensions>
</wpt>
</gpx>
".Trim();
static void Main(string[] args)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(RemoveNodeEx.xml);

System.Console.WriteLine(doc.OuterXml);

XmlNodeList nodes = doc.SelectNodes(@"/gpx/wpt/extensions");
foreach (XmlNode node in nodes)
{
node.ParentNode.RemoveChild(node);
}
System.Console.WriteLine("------------------");
System.Console.WriteLine(doc.OuterXml);
}
}

Note: I had to remove the namespace declarations from the root element to
get this to work correctly.

Sayed Ibrahim Hashimi
www.sedodream.com
 
Stuart Shay wrote:

In the following XML Below which is a XMLDocument in my application.

I want to remove the <extensions></extensions> Node completely.

What is the best way to do this, my files are not that large
Click to expand...


You can use the DOM XmlDocument, SelectNodes and RemoveChild as in

XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(@"example.xml");
XmlNamespaceManager namespaceManager = new
XmlNamespaceManager(xmlDocument.NameTable);
namespaceManager.AddNamespace("gp",
"http://www.topografix.com/GPX/1/1");
XmlNodeList extensionsElements = xmlDocument.SelectNodes(
"gp:gpx/gp:wpt/gp:extensions",
namespaceManager
);
foreach (XmlNode node in extensionsElements) {
node.ParentNode.RemoveChild(node);
}
xmlDocument.Save(Console.Out); // could save to file too
 
Martin Honnen said:
Stuart Shay wrote:




You can use the DOM XmlDocument, SelectNodes and RemoveChild as in
Click to expand...

Unnecessarily innefficient.
Just stream copy an XmlReader to an XmlWriter except for the nodes that you
don't want.
 
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