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Functional construction takes a completely different approach when
modifying and manipulating XML. In today??™s XML technology, manipulating and modifying XML usually
means a significant and detailed modification of the XML data source. LINQ to XML treats XML
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Chapter 8: Advanced LINQ to XML Programming Topics
modification as simply a transformation problem: you can take an XML data source and efficiently transform
it to another form.
The following example uses the employee XML tree from the previous example and constructs a new
XML tree, creating two new elements and selecting the name element from the employee tree:
XElement newXML = new XElement("Info",
new XElement("CurrentDate", DateTime.Today),
new XElement("Supervisor", "Jim"),
from el in employee.Element("Employee").Elements("Name")
where (string)el == "Scott"
select el);
When you run this code, the following XML tree is constructed:

2007-06-02T00:00:00-04:00
Jim
Scott

What makes functional construction great is that you can easily control the resulting XML tree through
the query expression.


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