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XML Data and C#.Net Major Classes List



The XML Document Object Model:
                   A W3C standard that allows random navigation, insertions and modification of XML.

System.XML => System.XML.dll
XMLDataDocument => System.Data.dll


XMLDocment and XMLDataDocument:
Both are in memory representation of the XML.
XMLDataDocument inherits from XMLDocjument and it represents data in relational format and can be exposed to dataset as well.

XMLDocument and XMLDataDocument provide the following methods:

CreateNode, Clone(deep=true copy childs), GetElementByID(DTD defines an element as ID Type), GetElementsByTagName(return XMLNodeList), ImportNode(from other document),
InsertBefore and InsertAfter( immediately Before/After the referenced node. If node exists, preexistent is removed and newer is inserted, if no reference it is inserted at the end/Beginning of childs).
Load(load from disk), LoadXML (Load from string), Normalize (Converts adjacent XMLText to single), PrependChilds(inserts a node at the beginning of the childe node list), ReadNode( Reads the node completely and moves forward) , RemoveAll(Remove all children and attribute from the current node), RemoveChild, ReplaceChild, Save(saves document to file), SelectNodes(select nodes that match the criteria), SelectSingleNode(XPATH,first node), WriteTo(Write node another xml document via XMLTextWriter), WriteContentsTo(Writes node and al its descendants to another xml document via XMLTextWriter).

XPathDocument: It provides a cached XMLDocument for faster XPath queries.
XMLConvert: XMLConvert provides many static methods to convert from XSD to .NET CLR data types. Automatically Converts space in CLR Types to _x0020_. And Decode name can be used to convert back. It has static methods to convert string to integer.

XPathNavigator: DocumentNavigator provides efficient navigation of XMLDocument(By XPath Query). XPathNavigator uses cursor model + XPath for readonly random access and supports XSLT style sheet.

XMLNodeReader: Read nodes, forward only, start from a given node from XMLDocument and XMLDataDocument.

XmlTextReader: Reads XML document without doc validation but checks it’s XML well formed doc.

XMLTextWriter: Writes to files in non-cached and forward only manner by ensuring that it conforms W3C XML 1.0. Handles namespaces and their conflicts.

XMLReader: Reads and validates XML against DTD, XML Schema Reduced(XDR), and XML Schema Definition (XSD).

XslTransform: Transform a XML document by XSL Stylesheet following XSLT 1.0. important methods include Load and Transform.


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