Hierachical data binding

[Chuck Gantz]

I have an existing XML file that I read into a data set ds. The XML is
hierarchical; i.e., it looks like

<A>
<B>
<C>
<D> element1<\D>
<E> element2<\E>
<\C>
<C>
<D> element3<\D>
<E> element4<\E>
<\C>
<\B>
<\A>

I created a schema based on the XML.
A, B, and C appear as individual dataTables in the dataset. I then bind
dataTable C to a dataGridView. Elements <D> and <E> get shown properly in
the dataGridView in two rows, one per each <C>.

If I save the dataset XML (using ds.WriteXML() ), I get back the original
XML file with the correct hierachy.

Then I added a new row in the dataGridView. When I now save the dataset XML,
dataTable C is saved as its own dataTable rather than being under <C>. In
other words, the above dataset appears as
<A>
<B>
<C>
<D> element1<\D>
<E> element2<\E>
<\C>
<C>
<D> element3<\D>
<E> element4<\E>
<\C>
<\B>
<C>
<D> element3<\D>
<E> element4<\E>
</C>
<\A>

My question (finally) is how do I save the new row I put into the
dataGridView in the correct hierarchy.

Thanks.

Chuck Gantz

[Cor Ligthert [MVP]]

Chuck,

Have a look for "Nested Dataset" on MSDN.

I did it for you,
http://search.microsoft.com/search/r...nested+dataset

I have looked more than a year ago to it, therefore I think that it is
better you have yourself a look at it.

(Without that searchword "nested" it is impossible to find)

I hope this helps,

Cor