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XML - how to read this XML-File?

Posted on 2004-08-29
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Last Modified: 2010-04-23
Hi all

I have this code here as proposed by the Microsoft XML-Video and it's working:

    Dim xmlfile As String = "..\collection.xml"
    Dim xmldoc As XmlDocument

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim xmltr As New XmlTextReader(xmlfile)
        While xmltr.Read
            If xmltr.Name = "Title" AndAlso xmltr.NodeType = XmlNodeType.Element Then
                ComboBox1.Items.Add(xmltr.ReadString)
            End If
        End While
        xmltr.Close()

        xmldoc = New XmlDocument
        xmldoc.Load(xmlfile)

    End Sub

    Sub Sven(ByVal position As Integer)
        On Error Resume Next
        TextBox1.Text = "-"
        TextBox2.Text = "-"
        TextBox5.Text = "-"
        TextBox3.Text = "-"
        Dim node As XmlNode = xmldoc.SelectSingleNode("/Collection/DVD[" & position & "]")
        TextBox1.Text = node.SelectSingleNode("CollectionType").InnerText
        TextBox2.Text = node.SelectSingleNode("CollectionNumber").InnerText
        TextBox3.Text = node.SelectSingleNode("ID").InnerText
        TextBox4.Text = node.SelectSingleNode("Overview").InnerText

        Err.Clear()
    End Sub

    Private Sub ComboBox1_SelectionChangeCommitted(ByVal sender As Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectionChangeCommitted
        Sven(ComboBox1.SelectedIndex + 1)

    End Sub



Now the problem is that I have this in my XML-File:

<Collection>
<DVD>
  <Title>Austin Powers: Spion in geheimer Missionarsstellung</Title>
    <Regions>
        <Region>2</Region>
        <Region>1</Region>
        <Region>6</Region>
    </Regions>
    <CollectionType>Owned</CollectionType>
    <CollectionNumber>408</CollectionNumber>
    <Overview>Mike Myers ist Powers - Austin Powers, </Overview>
  </DVD>
<DVD>
  <Title>Austin Powers</Title>
    <Regions>
        <Region>2</Region>
        <Region>4</Region>
        <Region>3</Region>
    </Regions>
    <CollectionType>Owned</CollectionType>
    <CollectionNumber>409</CollectionNumber>
    <Overview>Mike Myers ist Austin Powers</Overview>
  </DVD>
</Collection>



Now I want all Regions of one DVDs in a Textbox like:

Textbox1 = "2#1#6"

How can I do this? Should be in "Sub Sven"

Thanks a lot!!!!

Sven Rutten
0
Comment
Question by:Dumdidum
  • 3
4 Comments
 
LVL 19

Expert Comment

by:drichards
ID: 11926233
Here's a function that will generate the string you indicate from your XML.  You'll have to modify it to behave the way you want.  If this is not what you had in mind, let me know and I'll adjust it.

    Function ReadXML(ByVal xmlFile As String, ByVal title As String) As String
        ' Open and load the doc - you could pass an open doc as a parameter
        Dim xdoc As System.Xml.XmlDocument = New System.Xml.XmlDocument
        xdoc.Load(xmlFile)

        'Select Region text nodes under the desired title
        Dim nl As System.Xml.XmlNodeList = xdoc.SelectNodes("//DVD[Title = '" + title + "']//Region/text()")

        ' Extract the text into the desired format
        Dim sb As System.Text.StringBuilder = New System.Text.StringBuilder(16)
        For Each region As System.Xml.XmlNode In nl
            sb.Append(region.Value)
            sb.Append("#")
        Next
        ' Remove the trailing #
        sb.Remove(sb.Length - 1, 1)

        ReadXML = sb.ToString()
    End Function
0
 
LVL 19

Expert Comment

by:drichards
ID: 11926239
You would call the above function like this:

    Dim tbText = ReadXML("XMLFile1.xml", "Austin Powers: Spion in geheimer Missionarsstellung")

This will get the region info for "Austin Powers: Spion in geheimer Missionarsstellung" if your XML file is named XMLFile1.xml.
0
 
LVL 19

Accepted Solution

by:
drichards earned 400 total points
ID: 11926288
Didn't read the question closely enough.  Here's what I believe you were looking for:
 
   Sub Sven(ByVal position As Integer)
        On Error Resume Next
        TextBox1.Text = "-"
        TextBox2.Text = "-"
        TextBox5.Text = "-"
        TextBox3.Text = "-"
        Dim node As XmlNode = xmldoc.SelectSingleNode("/Collection/DVD[" & position & "]")
        TextBox1.Text = node.SelectSingleNode("CollectionType").InnerText
        TextBox2.Text = node.SelectSingleNode("CollectionNumber").InnerText
        TextBox3.Text = node.SelectSingleNode("ID").InnerText
        TextBox4.Text = node.SelectSingleNode("Overview").InnerText

        Dim nl As System.Xml.XmlNodeList = xdoc.SelectNodes("//DVD[" & position & "]//Region/text()")

        ' Extract the text into the desired format
        Dim sb As System.Text.StringBuilder = New System.Text.StringBuilder(16)
        For Each region As System.Xml.XmlNode In nl
            sb.Append(region.Value)
            sb.Append("#")
        Next
        ' Remove the trailing #
        sb.Remove(sb.Length - 1, 1)

        TextBox1.Text = sb.ToString()
 
       Err.Clear()
    End Sub

0
 

Author Comment

by:Dumdidum
ID: 11927376
Thanks a lot...

0

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