Writing xml file using XMLDocument c#

Writing xml file using XMLDocument c#

   Creating  an XML file using XMLDocument part of System.Xml namespace.

Step 1) Create Processing Instruction

Step 2) Create root element called "books" 

Step 3) Create book element

         Step 3.1) Create book title and add it to book

         Step 3.2) Create book price and add it to book

         Step 3.3) Create book publisher and add it to book

                  Step 3.3.1) Create a Authors Node

                  Step 3.3.1.1) Create author node

                              Step 3.3.1.1.1) Create firstname element  add it to author node

                               Step 3.3.1.1.1) Create lastname element       add it to author node    

                   Step 3.3.2) add author node to Authors Node

                  Step   3.3.3)add authors node to book node

Step 4) Add book node to books node

Step 5) Save the XML document                 

    static void CreateXMLFile()
        {
            XmlDocument doc = new XmlDocument();
            XmlProcessingInstruction xmlPI=

            doc.CreateProcessingInstruction("xml", "version='1.0'");
            doc.AppendChild(xmlPI);
           
       XmlElement root=doc.CreateElement("books");
            XmlNode books = doc.AppendChild(root);
            XmlElement book=doc.CreateElement("book");
            //XmlAttribute idattribute =
            book.SetAttribute("id", "1");//doc.CreateAttribute("id");
            //idattribute.Value = "1";
            //book.AppendChild(idattribute);
            XmlElement title = doc.CreateElement("title"); title.InnerText = "C# Programming";
            book.AppendChild(title);
            XmlElement Price = doc.CreateElement("Price"); Price.InnerText = "$44.49";
            book.AppendChild(Price);
            XmlElement Publisher = doc.CreateElement("Publisher"); Publisher.InnerText = "APRESS";
            book.AppendChild(Publisher);

            XmlElement authors=doc.CreateElement("Authors");
            XmlElement author=doc.CreateElement("author");
            XmlElement firstname = doc.CreateElement("firstname"); firstname.InnerText = "jhon";
            XmlElement lastname = doc.CreateElement("lastname"); lastname.InnerText = "peter";
            author.AppendChild(firstname); author.AppendChild(lastname);
            authors.AppendChild(author);

            book.AppendChild(authors);

            books.AppendChild(book);

             doc.Save(@"c:\books.xml");
        }

OUTPUT

<?xml version='1.0'?>
<books>
  <book id="1">
    <title>C# Programming</title>
    <Price>$44.49</Price>
    <Publisher>APRESS</Publisher>
    <Authors>
      <author>
        <firstname>jhon</firstname>
        <lastname>peter</lastname>
      </author>
    </Authors>
  </book>
</books>

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