How can I get the first element after an element with LINQ-to-XML?
Solution 1
You want to use the Descendants
axis method and then call the FirstOrDefault
extension method to get the first element.
Here is a simple example:
using System;
using System.Linq;
using System.Xml.Linq;
class Program
{
static void Main()
{
String xml = @"<?xml version=""1.0"" encoding=""utf-8"" ?>
<smartForm idCode=""customersMain"">
<title>Customers Main222</title>
<description>Generic customer form.</description>
<area idCode=""generalData"" title=""General Data"">
<column>
<group>
<field idCode=""anrede"">
<label>Anrede</label>
</field>
<field idCode=""firstName"">
<label>First Name</label>
</field>
<field idCode=""lastName"">
<label>Last Name</label>
</field>
</group>
</column>
</area>
<area idCode=""address"" title=""Address"">
<column>
<group>
<field idCode=""street"">
<label>Street</label>
</field>
<field idCode=""location"">
<label>Location</label>
</field>
<field idCode=""zipCode"">
<label>Zip Code</label>
</field>
</group>
</column>
</area>
</smartForm>";
XElement element = XElement.Parse(xml)
.Descendants()
.FirstOrDefault();
}
}
Solution 2
To add slightly to Andrew's answer if you do not know whether smartForm
is the root element but still want the title text of the first such entry you would use:
xml.DescendantsAndSelf("smartForm").Descendants("title").First().Value;
This requires that there be a smartForm element with a title element somewhere within it.
If you wanted to ensure that the title element was an immediate child in smartForm
you could use:
xml.DescendantsAndSelf("smartForm").Elements("title").First().Value;
If you didn't care what the name of title
was and just wanted the first sub element then you would use:
xml.DescendantsAndSelf("smartForm").Elements().First().Value;
Angry Dan
web/software developer, .NET, C#, WPF, PHP, software trainer, English teacher, have philosophy degree, love languages, run marathons my tweets: http://www.twitter.com/edward_tanguay my runs: http://www.tanguay.info/run my code: http://www.tanguay.info/web my publications: PHP 5.3 training video (8 hours, video2brain) my projects: http://www.tanguay.info
Updated on June 20, 2022Comments
-
Angry Dan almost 2 years
With this code I can get the title out of the following XML file:
var xml = XElement.Load (@"C:\\test\\smartForm-customersMain.xml"); string title = xml.Element("title").Value;
But how do I make it more exact, e.g. "get the first element after the smartForm element, e.g. something like this:
//PSEUDO-CODE: string title = xml.Element("smartForm").FirstChild("title");
The XML:
<?xml version="1.0" encoding="utf-8" ?> <smartForm idCode="customersMain"> <title>Customers Main222</title> <description>Generic customer form.</description> <area idCode="generalData" title="General Data"> <column> <group> <field idCode="anrede"> <label>Anrede</label> </field> <field idCode="firstName"> <label>First Name</label> </field> <field idCode="lastName"> <label>Last Name</label> </field> </group> </column> </area> <area idCode="address" title="Address"> <column> <group> <field idCode="street"> <label>Street</label> </field> <field idCode="location"> <label>Location</label> </field> <field idCode="zipCode"> <label>Zip Code</label> </field> </group> </column> </area> </smartForm>