XML: Basics, Attributes Collection

XML: Process XML Data In-Memory: System.XML
• DOM is an in-memory tree representation of an XML document.
• XMLDocument, XpathDocument, XpathNavigator classes allow construction of XML documents, load and access data, modify and save the changes
• XpathDocument class is read-only based on Xpath data model
• XpathNavigator class offers several editing options and navigation capabilities using a cursor model

Accessing Attributes in the DOM:
• Attributes are properties of the element, not children of the element
• When the current node is an element, use the HasAttribute method to see if there are any attributes associated with the element
• Some important methods for retrieving XML data:
• XmlElement.GetAttribute, GetAttributeNode: Get attributes as collection
• XmlElement.Attributes property to retrieve all the attributes
• XMLAttributeCollection.Count to get the number of attributes