XML is platform-neutral, making it one of the best technologies for interoperability between disparate systems such as UNIX or mainframes integration with Windows.While XML is extremely flexible and relatively easy to use, for some applications it may not be the best data representation.A simple example of a hard-coded approach is shown in the following code fragment. Xml Text Reader("Test.xml", nt); More Information For more information about object comparisons, see MSDN article, "Object Comparison Using Xml Name Table," at Consider the length of the element names and the length of the attribute names that you use. When you move from application design to development, you must carefully consider the implementation details of your XML code.When elements, attributes, or prefixes occur multiple times in the document, they are stored only once in the Xml Name Table and an atomized string is returned. By following best-practice implementation guidelines, you can increase the performance of your XML processing code. If the entire XML document is read into memory, the scalability of your application is limited.When an element, attribute, or prefix is looked up, an object comparison of the strings is performed instead of a more expensive string operation. The following sections highlight performance considerations for XML features and scenarios. Using Xml Text Reader in combination with an Xml Text Writer class permits you to handle much larger documents than a DOM-based Xml Document class.If you use the DOM to process large XML files, you can typically consume memory equivalent to three or four times the XML document size on disk.Using XSLT may be overly complicated for certain simple transformations such as changing a particular attribute value, replacing one node with another node, or appending or removing nodes from a document. Write Attributes methods receive an Xml Reader instance, and the method copies the node and its child nodes to Xml Writer.
You can only use Xml Text Reader and Xml Validating Reader to process files that are up to 2 gigabytes (GB) in size.Figure 9.1: XML namespaces and principal types The main XML-related issues that affect the performance and scalability of your application are summarized in the following list.Subsequent sections in this chapter provide strategies and technical implementation details to prevent or resolve each of these issues.Use this chapter to help design and implement effective XML processing in your applications. NET Framework provides a comprehensive set of classes for XML manipulation.In addition to XML parsing and creation, these classes also support the World Wide Web Consortium (W3C) XML standards. NET Application Performance and Scalability Chapter 5 — Improving Managed Code Performance Checklist: XML Performance Send feedback to [email protected] & practices Library Summary: This chapter provides performance guidelines and coding techniques for writing, querying, parsing, and validating XML efficiently with . Objectives Overview How to Use This Chapter Architecture Performance and Scalability Issues Design Considerations Implementation Considerations Parsing XML Validating XML Writing XML XPath Queries XSLT Processing Summary Additional Resources When you build . It is used to represent the message payload for Web services, and it is used by many Web applications to pass data across application layers.