DataSet with multiple Datatables and WriteXml() output order

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.NET3.0

XML

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.NET4

DataTable

Hi everyone !

I have used xsd.exe to produce a VB class matching my XSD file.
The latter is rather long, but very simple:

<elema>
	|
	|------> <elemsb>
	|-------------> <attrb1 />
	|-------------> <attrb2 />
	|------> </elemsb>
	|
	|------> <elemsc>
	|-------------> <attrc1 />
	|-------------> <attrc2 />
	|------> </elemsc>
	…etc …
</elema>

Everything works great, the files outputs with the WriteXml() method.
However, in the file

<elema> opens : OK
All <elemb> elements are written at once until </elemb>
Then, all <elemc> elements are written at once until </elemc>
And finally </elema>

And I need to have in my file

Open <elema>
first element of B
first of C
etc …
second of B
second of C,
etc …
And finally </elema>

I need to underline I can't make changes to the xsd as it's provided by a third-party.
In the data, there is always count(ElemsB) = count(ElemsC) = etc …
I'm concerned that I'd have to overload WriteXml()
Thanks for your help.

All the best,
Sebastien.