What's New in System.Xml
The following System.Xml features are new in the .NET Framework: LINQ to XML and XSLT Compiler.
LINQ to XML provides an in-memory XML programming API that leverages the .NET Framework Language-Integrated Query (LINQ). It is comparable to a modernized, redesigned document object model (DOM) XML programming interface. LINQ to XML uses the latest .NET Framework language capabilities. For more information, see LINQ to XML.
The XSLT compiler (xsltc.exe) compiles XSLT style sheets and generates an assembly. The assembly can then be passed directly into the new XslCompiledTransform.Load(Type) method. For more information, see XSLT Compiler (xsltc.exe).