How to read xml node value

Question

I'm have an xml file and am struggling to read value "my name" in c# can anyone help?

<?xml version="1.0" encoding="UTF-8" ?> 
<doc:SomeReport xsi:schemaLocation="urn:tes:doc:Fsur.0.97 C:\Documents%20and%20Settings\rty0403\Desktop\Smaple%20Sampling%20Schemas\Testdoc.doc.0.97.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:bie3="urn:tes:data:CommonAggregates:0.97" xmlns:bie1="urn:tes:data:SampleAggregates:0.97" xmlns:doc="urn:tes:doc:Fsur.0.97">
  <doc:family>
    <doc:first>my name</doc:first> 
  </doc:family>
</doc:SomeReport>

How are you trying to read the value? Care to give a code sample? — alex, May 12 '11 at 06:31
here you go , matches does not bring anything. XmlDocument xdoc = new XmlDocument(); xdoc.Load(file); XmlNodeList matches = xdoc.SelectNodes("//First"); — melspring, May 12 '11 at 06:42
Please update your question with any additional info you have. — Daniel Hilgarth, May 12 '11 at 06:43

score 1 · Answer 1 · edited May 23 '17 at 11:55

1

Most probably, you forgot to define the namespace before trying to select the node.

See XML: Object reference not set to an instance of an object or How to select xml root node when root node has attribute? for more info.

edited May 23 '17 at 11:55

Community

1
1

answered May 12 '11 at 06:42

Daniel Hilgarth

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score 1 · Accepted Answer · answered May 12 '11 at 06:44

You could use the XPathSelectElement method:

using System;
using System.Xml;
using System.Xml.Linq;
using System.Xml.XPath;

class Program
{
    static void Main()
    {
        using (var reader = XmlReader.Create("test.xml"))
        {
            var doc = XDocument.Load(reader);
            var nameTable = reader.NameTable;
            var namespaceManager = new XmlNamespaceManager(nameTable);
            namespaceManager.AddNamespace("doc", "urn:tes:doc:Fsur.0.97");
            var first = doc.XPathSelectElement("//doc:first", namespaceManager);
            Console.WriteLine(first.Value);
        }
    }
}

Thanks Darin that works fine!!, just wondering whats the difference between using XDocument and XMLDocumnet like below XmlDocument xdoc = new XmlDocument(); xdoc.Load(file); XmlNamespaceManager man = new XmlNamespaceManager(xdoc.NameTable); man.AddNamespace("doc", "urn:tes:doc:Fsur.0.97"); XmlNodeList matches = xdoc.SelectNodes("//doc:first", man); — melspring, May 13 '11 at 00:44

alex · Answer 3 · 2011-05-12T10:25:36.483

1

Here's one way to do it:

XElement xml = XElement.Load(fileName); // load the desired xml file
XNamespace aw = "urn:tes:doc:Fsur.0.97"; // this is the namespace in your xml

var firstName = xml.Element(aw + "family").Element(aw + "first").Value;

This will only get you one element of type family and one element of type first.

edited May 12 '11 at 10:25

answered May 12 '11 at 06:47

alex

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how do I pass a filename instead of text? – melspring May 12 '11 at 06:58
@melspring: `XElement xml = XElement.Load(filepath);` – alex May 12 '11 at 07:20

How to read xml node value

3 Answers3