XML, which is all about tree structured data, and Linq, which is all about querying collections, might not seem to fit together, but they work together just fine.

Linq isn’t just about SQL and it isn’t even just about database. It is a mechanism for querying collections with a wide range of structures. 

After looking in some detail at the basic idea behind Linq, it is instructive to examine probably its second most common application - working with XML.

The basics of working with the new XML facilities are covered in

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<ASIN:0596007647>

<ASIN:161729134X>

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