Writing xml file using XMLDocument VB.NET

Writing xml file using XMLDocument VB.NET

   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                 

  Shared  Sub CreateXMLFile()
            Dim doc As XmlDocument =  New XmlDocument()
            XmlProcessingInstruction xmlPI=
            doc.CreateProcessingInstruction("xml", "version='1.0'")
            doc.AppendChild(xmlPI)

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

            Dim authors As XmlElement = doc.CreateElement("Authors")
            Dim author As XmlElement = doc.CreateElement("author")
            Dim firstname As XmlElement =  doc.CreateElement("firstname")  firstname.InnerText  =  "jhon"
            Dim lastname As XmlElement =  doc.CreateElement("lastname")  lastname.InnerText  =  "peter"
            Dim author.AppendChildCType(As author.AppendChild(firstname), lastname)
            authors.AppendChild(author)

            book.AppendChild(authors)

            books.AppendChild(book)

             doc.Save("c:\books.xml")
  End Sub

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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