Linq To XML 简单操作

加载xml文件和保存xml文件

XDocument doc = XDocument.Load(Server.MapPath("\\xmlfile\\Book.xml"));

doc.Save(Server.MapPath("\\xmlfile\\BookBackup.xml"));

创建元素

XElement xe = new XElement("book",new XElement("bookname","asp.net mvc 4 高级编程"),

new XElement("bookAuthor","Jon Galloway"),

new XElement("publisher","清华大学出版社"));

给元素添加命名空间

XNamespace ns = "http://mvctest/root"; //用来给根节点添加命名空间

XNamespace ns1 = "http://mvctest/sub"; //用来给子元素添加命名空间

XElement xe = new XElement(ns+"book", new XElement(ns1+"bookname", "asp.net mvc 4 高级编程"),

new XElement(ns1+"bookAuthor", "Jon Galloway"),

new XElement(ns1+"publisher", "清华大学出版社"));

添加注释

XComment comment = new XComment("这里是注释");

doc.Add(comment);

XElement xe = new XElement("book", new XElement("bookname", "asp.net mvc 4 高级编程"),

new XComment("下面是书的作者和出版社"),

new XElement("bookAuthor", "Jon Galloway"),

new XElement("publisher", "清华大学出版社"));

添加节点的属性

XElement xe = new XElement("book",new XAttribute("isbn","123456789"),

new XElement("bookname", "asp.net mvc 4 高级编程"),

new XComment("下面是书的作者和出版社"),

new XElement("bookAuthor", "Jon Galloway"),

new XElement("publisher", "清华大学出版社"));

向原有的文档添加节点

XDocument doc = XDocument.Load(Server.MapPath("\\xmlfile\\Book.xml"));

XElement xe = new XElement("book",new XElement("bookname", "asp.net mvc 4 高级编程"),

new XElement("bookAuthor", "Jon Galloway"),

new XElement("publisher", "清华大学出版社"));

doc.Root.Add(xe);

doc.Save(Server.MapPath("\\xmlfile\\Book.xml"));

查询

XDocument doc = XDocument.Load(Server.MapPath("\\xmlfile\\Book.xml"));

var result = from book in doc.Descendants("bookname")

                   where book.ToString().Contains("基础")

                   select book.Value;

           

Linq To XML 简单操作,码迷,mamicode.com