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create XML file with multi level nodes

Posted on 2008-06-09
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1,259 Views
Last Modified: 2013-11-18
I'm trying to create XML file similar to the one below:
+ <Header>
  <MessageType>Release</MessageType>
  <DateTime>2008-03-26 19:05:12</DateTime>
  <EventType>Created</EventType>
  </Header>
- <Body>
- <ReleaseTask>
- <Origine>
  <Name />
- <References>
  <Name />
  <Value>E-17</Value>
  </References>
  </Origine>
  <LoadType>EMPTY</LoadType>
  </ReleaseTask>
  </Body>
I know how to create a Header section but have issue with the multi level Body section. I'm using VB .NET in VS 2005 Xml.XmlDocument and Xml.XmlNode syntax but can not get that work. Can you provide a sample code to me. Thank you.
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Question by:jurekm61
  • 3
  • 3
6 Comments
 
LVL 12

Expert Comment

by:Jeff Darling
ID: 21746773
Your XML is invalid.  XML documents must have a single root element.

http://www.w3schools.com/xml/xml_dtd.asp


<?xml version="1.0"?>
<myroot>
  <Header>
    <MessageType>Release</MessageType>
    <DateTime>2008-03-26 19:05:12</DateTime>
    <EventType>Created</EventType>
  </Header>
  <Body>
    <ReleaseTask>
      <Origine>
        <Name/>
        <References>
          <Name/>
          <Value>E-17</Value>
        </References>
     </Origine>
     <LoadType>EMPTY</LoadType>
    </ReleaseTask>
   </Body>
</myroot>

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Author Comment

by:jurekm61
ID: 21746862
My full XML file includes <myroot> </myroot>  tags and it looks exactly the way you showed above. I did not include them in my example as I felt it was not relevant to my question.

I'm just asking how do I create node levels between <Body></Body> tags ?
0
 
LVL 12

Expert Comment

by:Jeff Darling
ID: 21747137
Here is one way to do it using xmlwriter.

Imports System.xml
 
Public Class Form1
 
 
 
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
 
        Dim settings As New XmlWriterSettings()
        settings.Indent = True
        settings.IndentChars = "  "
        settings.NewLineChars = vbCrLf
 
        Using writer As XmlWriter = XmlWriter.Create("c:\jeffd\vb\makexml\output.xml", settings)
            writer.WriteStartElement("myroot")
 
            writer.WriteStartElement("Header")
            writer.WriteElementString("MessageType", "Release")
            writer.WriteElementString("DateTime", "2008-03-26 19:05:12")
            writer.WriteElementString("EventType", "Created")
            writer.WriteEndElement()
 
            writer.WriteStartElement("Body")
 
            writer.WriteStartElement("ReleaseTask")
 
            writer.WriteStartElement("Origin")
            writer.WriteElementString("Name", "")
 
            writer.WriteStartElement("References")
            writer.WriteElementString("Name", "")
            writer.WriteElementString("Value", "E-17")
            writer.WriteEndElement()
 
            writer.WriteEndElement()
            writer.WriteElementString("LoadType", "EMPTY")
 
 
 
 
            writer.Flush()
        End Using
 
    End Sub
End Class

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Author Comment

by:jurekm61
ID: 21747677
Can you provide an example how to achive the same by using Xml.XmlDocument and nodes. Thanks for your help. I want to understand that better by looking at different examples.
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LVL 12

Accepted Solution

by:
Jeff Darling earned 125 total points
ID: 21753562
It is much harder to do that way, but here it is...
    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
 
        Dim objDocument As New System.Xml.XmlDocument
 
        Dim objXmlNode As System.Xml.XmlNode
 
        Dim objXmlNodeNew As System.Xml.XmlNode
        Dim objXmlNodeNew2 As System.Xml.XmlNode
        Dim objXmlNodeNew3 As System.Xml.XmlNode
        Dim objXmlNodeNew4 As System.Xml.XmlNode
        Dim objXmlNodeNew5 As System.Xml.XmlNode
 
        objDocument.LoadXml("<myroot></myroot>")
 
        objXmlNodeNew = objDocument.CreateElement("Header")
 
        objXmlNode = objDocument.DocumentElement
 
        objXmlNodeNew2 = objDocument.CreateElement("MessageType")
 
        objXmlNodeNew2.InnerText = "Release"
 
        objXmlNodeNew.AppendChild(objXmlNodeNew2)
 
        objXmlNodeNew2 = objDocument.CreateElement("DateTime")
 
        objXmlNodeNew2.InnerText = "2008-03-26 19:05:12"
 
        objXmlNodeNew.AppendChild(objXmlNodeNew2)
 
        objXmlNodeNew2 = objDocument.CreateElement("EventType")
 
        objXmlNodeNew2.InnerText = "Created"
 
        objXmlNodeNew.AppendChild(objXmlNodeNew2)
 
 
 
        objXmlNode.AppendChild(objXmlNodeNew)
 
        objXmlNode = objDocument.DocumentElement
 
        'Body
 
        objXmlNodeNew = objDocument.CreateElement("Body")
 
        objXmlNode = objDocument.DocumentElement
 
        objXmlNode.AppendChild(objXmlNodeNew)
 
 
        'ReleaseTask
 
        objXmlNodeNew2 = objDocument.CreateElement("ReleaseTask")
 
        objXmlNodeNew.AppendChild(objXmlNodeNew2)
 
        'Origin
 
        objXmlNodeNew3 = objDocument.CreateElement("Origin")
 
        objXmlNodeNew2.AppendChild(objXmlNodeNew3)
 
        'Name
 
        objXmlNodeNew4 = objDocument.CreateElement("Name")
 
        objXmlNodeNew4.InnerText = ""
 
        objXmlNodeNew3.AppendChild(objXmlNodeNew4)
 
        'References
        objXmlNodeNew4 = objDocument.CreateElement("References")
 
        objXmlNodeNew3.AppendChild(objXmlNodeNew4)
 
 
        'Name
        objXmlNodeNew5 = objDocument.CreateElement("Name")
 
        objXmlNodeNew5.InnerText = ""
 
        objXmlNodeNew4.AppendChild(objXmlNodeNew5)
 
        'Value
        objXmlNodeNew5 = objDocument.CreateElement("Value")
 
        objXmlNodeNew5.InnerText = "E-17"
 
        objXmlNodeNew4.AppendChild(objXmlNodeNew5)
 
 
        'LoadType
 
        objXmlNodeNew3 = objDocument.CreateElement("LoadType")
 
        objXmlNodeNew3.InnerText = "EMPTY"
 
        objXmlNodeNew2.AppendChild(objXmlNodeNew3)
 
 
        TextBox1.Text = objDocument.InnerXml

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Author Closing Comment

by:jurekm61
ID: 31465485
Thanks for your help. It was up-to-the-point solution I was looking for..
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