Query XML trees overview (LINQ to XML)

After you've instantiated an XML tree, writing queries is the most effective way to extract data from the tree. Also, querying combined with functional construction enables you to generate a new XML document that has a different shape from the original document.

For background information about LINQ queries, see:

• Introduction to LINQ Queries (C#)
• Writing Your First LINQ Query (Visual Basic)

In this section

This section of articles provides information, including examples, about LINQ to XML queries. It comprises the following subsections:

Article	Description
Basic queries	Provides common examples of querying XML trees.
Projections and transformations	Provides common examples of projecting from and transforming XML trees.
Advanced query techniques	Provides query techniques that are useful in more advanced scenarios.
LINQ to XML for XPath users	Presents a number of XPath expressions and their LINQ to XML equivalents.
Introduction to pure functional transformations	Presents a small tutorial on writing queries in the style of functional programming.

See also

• Language-Integrated Query (LINQ) (C#)
• Introduction to LINQ Queries (C#)
• LINQ in Visual Basic
• Language-Integrated Query (LINQ) (Visual Basic)
• Getting Started with LINQ in Visual Basic
• Writing Your First LINQ Query (Visual Basic)