Create XML using class XmlDocument

 The result XML document is as follows:

1. <?xml version="1.0" encoding="GB2312"?>
2. <Books>
3.   <Book genre="Mystery" publicationdate="2001" ISBN="123456789">
4.     <title>The Case of the Missing Cookie</title>
5.     <author Country="America">
6.       <Name>Cookie Monster</Name>
7.     </author>
8.     <Price>$9.99</Price>
9.   </Book>
10. </Books>

The C# code is:

1. XmlDocument xmlDoc = new XmlDocument();
2.             // Create XML declaration
3.             XmlDeclaration xdl = xmlDoc.CreateXmlDeclaration("1.0", "GB2312", null);
4.             xmlDoc.AppendChild(xdl);
6.             // Create root node "Books"
7.             XmlElement books = xmlDoc.CreateElement("Books");
9.             // Create child node book infomation
10.             XmlElement book1 = xmlDoc.CreateElement("Book");
11.             // set node attributes
12.             book1.SetAttribute("genre", "Mystery");
13.             book1.SetAttribute("publicationdate", "2001");
14.             book1.SetAttribute("ISBN", "123456789");
16.             // create sub elements for book
17.             XmlElement title = xmlDoc.CreateElement("title");
18.             title.InnerText = "The Case of the Missing Cookie";
19.             book1.AppendChild(title);
21.             XmlElement author = xmlDoc.CreateElement("author");
22.             author.SetAttribute("Country", "America");
23.             book1.AppendChild(author);
25.             XmlElement authorName = xmlDoc.CreateElement("Name");
26.             authorName.InnerText = "Cookie Monster";
27.             author.AppendChild(authorName);
29.             XmlElement price = xmlDoc.CreateElement("Price");
30.             price.InnerText = "$9.99";
31.             book1.AppendChild(price);
33.             // add book information to books which is root element of the document
34.             books.AppendChild(book1);
36.             // add root node to document
37.             xmlDoc.AppendChild(books);
38.             // save the xml document to file system
39.             xmlDoc.Save("d://file1.xml");