Le vendredi 17 avril 2009 16:00:00 UTC, Candle a écrit :

I get the following error when I try to validate XML against a
schema:
The 'http://www.w3.org/XML/1998/namespace:lang' attribute is not
declared

My questions are:
1. Why I am I getting this error?
2. How can I resolve?

I got the schema definition from a third party (ACORD).

I tried to do this using two different methods:

Method 1 – Using a LINQ XDoc (preferred way)

Private Function ValidXsd(ByVal AcordXml As String) As Boolean

Dim schemas As New XmlSchemaSet()
Dim returnVal As Boolean

schemas.Add(Nothing, XmlReader.Create(Server.MapPath("Includes \acord-pcs-v1_15_1-ns-nodoc-codes.xsd")))

Dim xDocAcordXml = XDocument.Load(New StringReader(AcordXml))

xDocAcordXml.Validate(schemas, AddressOf
ValidationEventHandler, True)

If SchemaValidationResults.Count = 0 Then
returnVal = True
Else
'Populate AcordXml with values in SchemaValidationResults
End If

Return returnVal

End Function

Sub ValidationEventHandler(ByVal sender As Object, ByVal e As System.Xml.Schema.ValidationEventArgs)

SchemaValidationResults.Add(e.Severity & ": " & e.Message)

End Sub

Method 2 – Using a XmlReader

Private Function ValidXsd2(ByVal AcordXml As String) As Boolean

Dim settings As New XmlReaderSettings()
Dim returnVal As Boolean

settings.Schemas.Add(Nothing, XmlReader.Create(Server.MapPath ("Includes\acord-pcs-v1_15_1-ns-nodoc-codes.xsd")))

settings.ValidationType = ValidationType.Schema
settings.ValidationFlags = XmlSchemaValidationFlags.ReportValidationWarnings

AddHandler settings.ValidationEventHandler, AddressOf settings_ValidationEventHandler

settings.IgnoreWhitespace = True
settings.IgnoreComments = True

Using reader As XmlReader = XmlReader.Create(New StringReader (AcordXml), settings)
While (reader.Read())
'Empty loop
End While
End Using

If SchemaValidationResults.Count = 0 Then
returnVal = True
Else
'Populate AcordXml with values in SchemaValidationResults
End If

Return returnVal

End Function

' Display any warnings or errors.
Private Sub settings_ValidationEventHandler(ByVal sender As Object,
ByVal e As System.Xml.Schema.ValidationEventArgs)

SchemaValidationResults.Add(e.Severity & ": " & e.Message)

End Sub

I know the above code samples works since I tried them on a simple
example (XML, Schema). Plus I stole them from a book.

Any advice would be much appreciated.

Regards,

R

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On 11/06/2019 11:51, oussbkik2@gmail.com wrote:

Le vendredi 17 avril 2009 16:00:00 UTC, Candle a écrit :

I get the following error when I try to validate XML against a
schema:
The 'http://www.w3.org/XML/1998/namespace:lang' attribute is not
declared

My questions are:
1. Why I am I getting this error?

The Schema would seem to be defective: it does not contain a declaration
for the "lang" attribute (on some unidentified element).

But that error message looks odd. I don't know why it's mentioning that
URI instead of the one related to the element type where the error
occurred.

2. How can I resolve?

Whatever validator you are using (you don't say) does not identify
*which* element type is in error.

Open the file in an XML editor and click on the Validate button. That
should either jump the cursor to the location of the error, or at least
give you a line number or path to the location.

I got the schema definition from a third party (ACORD).

They would be the people to ask.

I tried to do this using two different methods:

This looks like a steamroller to crack a nut. Can you just run a
standalone validator that reports properly on the error?

I know the above code samples works since I tried them on a simple
example (XML, Schema). Plus I stole them from a book.

They may work, but they don't seem to provide any useful information.

Peter

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