Handle validation event

    


Public Class Example9

    Shared Sub Main
        Dim doc As System.Xml.XmlDocument
        Dim editor, editor2 As System.Xml.XPath.XPathNavigator
        Dim writer As System.Xml.XmlWriter
        Dim schemaSet As System.Xml.Schema.XmlSchemaSet
        Dim handler As System.Xml.Schema.ValidationEventHandler

        doc = New System.Xml.XmlDocument()
        doc.Load("pubs.xml")

        For Each editor In doc.CreateNavigator().Select("/pubs/titles[authors/@au_lname='Green']")
            editor2 = editor.SelectSingleNode("authors[@au_lname!='Green']")
            If Not IsNothing(editor2) Then
                editor2.DeleteSelf()
            End If

            writer = editor.AppendChild()
            writer.WriteStartElement("authors")
            writer.WriteAttributeString("au_lname", "A")
            writer.WriteAttributeString("au_fname", "B")
            writer.Close()
        Next

        editor = doc.CreateNavigator()
        schemaSet = New System.Xml.Schema.XmlSchemaSet()
        schemaSet.Add(Nothing, "pubs.xsd")
        schemaSet.Compile()
        handler = New System.Xml.Schema.ValidationEventHandler(AddressOf ValidationCallback)

        doc.Save("output.xml")

    End Sub

    Public Sub ValidationCallback(ByVal sender As Object, ByVal e As System.Xml.Schema.ValidationEventArgs)
        System.Console.WriteLine(e.Message)
    End Sub
End Class

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Handle validation event : XML Validation « XML « VB.Net

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