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Validate XML

jdhackett asked
Last Modified: 2012-05-09
I have some code which validates XML. It write all the errors to a text box. I've attached the code.

All works fine. However, it would be better if it gave more details. For example, which line of the XML is the issue. Anyone got an idea how to do this?


Public Class frmValidate

   Public Target_XML As String

   Private Sub btnValidate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnValidate.Click


         Dim Validator As New XmlValidator()
         Dim Errors As List(Of String)
         Dim RawXml As String

         Const MY_XSD As String = "C:\Sample\Tras_V7_09.xsd"

         Using Reader As New StreamReader(Target_XML)
            RawXml = Reader.ReadToEnd()
         End Using

         With Validator
            .SchemaSettings.ProhibitDtd = False

            Errors = .ValidateXml(RawXml)
         End With

         Me.txtErrors.Text = "Errors:" & Errors.Count & vbCrLf & vbCrLf
         For Each Err As String In Errors
            Me.txtErrors.Text &= Err & vbCrLf


      Catch ex As Exception
         msgError(ex.Message, "XML Validate")
      End Try

   End Sub
End Class

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