How to serialize correct XML headers

[PMNorris]

All,
I am trying to generate the following header when serializing a class
to XML

<FpML
version="4-0"
xsi:type="Trade Affirmation"
xmlns:xsi="http ://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocat ion="http://www.fpml.org/2003/FpML-4-0
fpml-main-4-0.xsd"
xmlns="http://www.fpml.org/2003/FpML-4-0">
</FpML>

The class is currently declared as:
<System.Xml.Ser ialization.XmlT ypeAttribute([Namespace]:="http://www.fpml.org/2003/FpML-4-0"),
_
System.Xml.Seri alization.XmlRo otAttribute([DataType]:="TradeAffirma tion")>
_
Public Class FpML
End Class
This generates the following:
<FpML xmlns:xsd="http ://www.w3.org/2001/XMLSchema"
xmlns:xsi="http ://www.w3.org/2001/XMLSchema-instance">
</FpML>

I am unsure how to get my code to generate the header correctly. Any
ideas?

Many thanks
Paul

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[Christoph Schittko [MVP]]

PMNorris,
This class should get you the header you're looking for:

<System.Xml.Ser ialization.XmlT ypeAttribute([Namespace]:="http://www.fpml.org
/2003/FpML-4-0")> _
Public Class FpML
<XmlAttributeAt tribute()> _
Public version As String = "4.0"

<XmlAttributeAt tribute([Namespace]:="http://www.w3.org/2001/XMLSchema-instan
ce")> _
Public schemaLocation As String =
"http://www.fpml.org/2003/FpML-4-0fpml-main-4-0.xsd"

<XmlAttributeAt tribute([Namespace]:="http://www.w3.org/2001/XMLSchema-instan
ce")> _
Public type As String = "TradeAffirmati on"
End Class

To add the default namespace declaration, you need to pass the name of the
default namespace to the constructor of the XmlSerializer like this:
Dim ser As New XmlSerializer(G etType(FpML),
"http://www.fpml.org/2003/FpML-4-0")

--
HTH
Christoph Schittko [MVP, XmlInsider]
Software Architect, .NET Mentor

"PMNorris" <pa*********@uk .nomura-dot-com.no-spam.invalid> wrote in message
news:3f******** **@127.0.0.1...

All,
I am trying to generate the following header when serializing a class
to XML

<FpML
version="4-0"
xsi:type="Trade Affirmation"
xmlns:xsi="http ://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocat ion="http://www.fpml.org/2003/FpML-4-0
fpml-main-4-0.xsd"
xmlns="http://www.fpml.org/2003/FpML-4-0">
</FpML>

The class is currently declared as:
<System.Xml.Ser ialization.XmlT ypeAttribute([Namespace]:="http://www.fpml.org
/2003/FpML-4-0"), _
System.Xml.Seri alization.XmlRo otAttribute([DataType]:="TradeAffirma tion")> _
Public Class FpML
End Class
This generates the following:
<FpML xmlns:xsd="http ://www.w3.org/2001/XMLSchema"
xmlns:xsi="http ://www.w3.org/2001/XMLSchema-instance">
</FpML>

I am unsure how to get my code to generate the header correctly. Any
ideas?

Many thanks
Paul

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