Recently learned. net xml file operations, summarized as follows: XML Full name: Extensible Markup Language (Extensible Markup Language) XML is used to mark electronic files to make it a structured Markup Language, it can be used to mark data and define data types. It is a source language that allows users to define their own markup language. Differences between XML and databases: databases provide stronger data storage and analysis capabilities, such as data indexing, sorting, search, and consistency. XML is only used to store data; the example is introduced below www.2cto.com. NET how to operate xml xmlfile. the detailed information of the xml file is as follows: [html] <? Xml version = "1.0" encoding = "UTF-8"?> <Pizza> <Pizzas id = "1" size = "6" price = "18"> shiitake mushroom and ham Pizza </Pizzas> <Pizzas id = "2" size = "6" price = "18"> vegetable sausage pizza </Pizzas> <Pizzas id = "3" size = "6" price = "18"> smoked chicken mushroom pizza </Pizzas> <pizzas id = "4" size = "6" price = "18"> Margaret pizza </Pizzas> <Pizzas id = "5" size = "6" price = "28"> Moroccan Pizza </Pizzas> </Pizza> <? Xml version = "1.0" encoding = "UTF-8"?> <Pizza> <Pizzas id = "1" size = "6" price = "18"> shiitake mushroom and ham Pizza </Pizzas> <Pizzas id = "2" size = "6" price = "18"> vegetable sausage pizza </Pizzas> <Pizzas id = "3" size = "6" price = "18"> smoked chicken mushroom pizza </Pizzas> <pizzas id = "4" size = "6" price = "18"> Margaret pizza </Pizzas> <Pizzas id = "5" size = "6" price = "28"> Moroccan Pizza </Pizzas> </Pizza> showXml. aspx file and XMLFILE. path relationship of the xml file: showXml. details of the aspx file: Code: [csharp] <% @ Page Language = "C #" AutoEventWireup = "true" CodeFile = "showXm L. aspx. cs "Inherits =" showXml "%> <! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN "" http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> <Html xmlns =" http://www.w3.org/1999/xhtml "> <Head runat =" server "> <title>