Mega Code Archive

 

Categories / VB.Net / XML

 

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