What are the derived classes from xmlReader and xmlWriter?
Both XmlReader and XmlWriter are abstract base classes, which define the functionality that all derived classes must support. There are three concrete implementations of XmlReader: 1.XmlTextReader 2.XmlNodeReader 3.XmlValidatingReader There are two concrete implementations of XmlWriter: 1.XmlTextWriter 2.XmlNodeWriter XmlTextReader and XmlTextWriter support reading data to/from text-based stream, while XmlNodeReader and XmlNodeWriter are designed for working with in-memory DOM tree structure. The custom readers and writers can also be developed to extend the built-in functionality of XmlReader and XmlWriter.
