(VB.NET) AddAttribute - Insert New Attribute in an XML Node

Demonstrates adding an name=value attribute to an XML element.

This example uses the XML sample file here: sample1.xml. The sample1.xml file contains this content:

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

Dim xml As New Chilkat.Xml

Dim success As Boolean = xml.LoadXmlFile("qa_data/xml/sample1.xml")
If (success <> True) Then
    Debug.WriteLine(xml.LastErrorText)
    Exit Sub
End If


' Navigate to the "books" element:
Dim bFound As Boolean = xml.FindChild2("books")
If (bFound = False) Then
    Debug.WriteLine("No books child found!")
    Exit Sub
End If


Dim numChildren As Integer = xml.NumChildren

Dim i As Integer = 0
While i < numChildren

    ' Navigate to the Nth book 
    xml.GetChild2(i)

    ' Display the book title:
    Debug.WriteLine(xml.GetAttrValue("title"))

    ' Add a new integer attribute:
    ' Should never fail..
    xml.AddAttributeInt("bookId",i)

    ' Add a new unread="yes" attribute:
    xml.AddAttribute("unread","yes")

    ' Navigate back up to the parent:
    xml.GetParent2()

    i = i + 1
End While

' Navigate back to the document root:
xml.GetRoot2()

' Save the updated document:
success = xml.SaveXml("modified.xml")
If (success <> True) Then
    Debug.WriteLine(xml.LastErrorText)
    Exit Sub
End If


Debug.WriteLine(xml.GetXml())