tailieunhanh - Beginning Ajax with ASP.NET- P10

Beginning Ajax with P10:Thank you for purchasing Beginning Ajax with . We know that you have a lot of options when selecting a programming book and are glad that you have chosen ours. We’re sure you will be pleased with the relevant content and high quality you have come to expect from the Wrox Press line of books. | Data Communication XML XSLT and JSON Validation Error br The XmlReaderSettings object specifies the settings used in reading in some XML. This object is used with the static .Create method when an XmlReader object is created. The properties to note are the ValidationType which is set from an enumeration and the Schemas property which is based on the SchemaSet object. The XmlSchemaSet object contains a set of XML Schemas to validate against. If the XML is not valid based on the schema an XmlSchemaException is generated. Parsing XML Two popular types of XML processing exist the Document Object Model DOM and the Simple API for XML SAX . The key difference between these two approaches is that the first loads the entire XML document into an in-memory data structure whereas the latter iterates over the XML document one piece at a time in a forward-only read-only fashion. DOM Parsing The Document Object Model DOM is an API that allows access to XML and HTML documents and their elements. The DOM is programming-language- and platform-independent. Typically XML parsers have been developed that must make use of a tree structure will all elements fully loaded into the parser before any operations occur. As a result DOM is best used for applications where the document elements are randomly accessed and manipulated. There are several levels of DOM specification. These specification levels are Level 0 A Level 0 DOM contains all of the vendor-specific DOMs that existed before the W3C standardization process. Level 1 A Level 1 DOM allows for the navigation of documents and modification of their content. Level 2 A Level 2 DOM contains support for XML namespaces filtered views and events. Level 3 A Level 3 DOM consists of support for DOM Level 3 Core DOM Level 3 Load and Save DOM Level 3 XPath DOM Level 3 Views and Formatting DOM Level 3 Requirements DOM Level 3 Validation For further information on the DOM please refer to Chapter 3.