Typed Dataset heirarchy problem

[Chuck Bowling]

I have a typed dataset with a root element - InstrumentSet with a collection
of Instruments. Each instrument has a Comment, a Name, a SourceCode block,
and a collection of Parameters. Like so:

<InstrumentSet>
<Instrument>
<Comment>xxx</Comment>
<Name>myName</Name>
<SourceCode>myCode</SourceCode>
<Parameter>
<P1>aaa</P1>
<P2>bbb</P2>
</Parameter>
</Instrument>
</InstrumentSet>

I'm using databindings to hold the instrument name, comment and sourcecode
in text boxes. I want to use a datagrid to hold a list of Parameters for
each Instrument but I can't quite figure out how to drill down to the
Parameter table for each Instrument. I tried variations on the following:

txtName.DataBindings.Add(new Binding("Text", instrumentSet,
"Instrument.Name"));

txtComment.DataBindings.Add(new Binding("Text", instrumentSet,
"Instrument.Comment"));

txtSourceCode.DataBindings.Add(new Binding("Text", instrumentSet,
"Instrument.SourceCode"));

dgParameters.DataSource = instrumentSet;

this.bmInstruments = this.BindingContext[instrumentSet, "Instrument"];

I can't figure out what the correct dgParameters.DataSource statement should
be. Can someone help?

[Bob]

On 14-Oct-2004, "Chuck Bowling" <ch**********@sbcglobal-NO-SPAM.net> wrote:

I have a typed dataset with a root element - InstrumentSet with a
collection
of Instruments. Each instrument has a Comment, a Name, a SourceCode block,

and a collection of Parameters. Like so:

<InstrumentSet>
<Instrument>
<Comment>xxx</Comment>
<Name>myName</Name>
<SourceCode>myCode</SourceCode>
<Parameter>
<P1>aaa</P1>
<P2>bbb</P2>
</Parameter>
</Instrument>
</InstrumentSet>

Yeah, I ran into the same wall. You're better off using XPath.

[Chuck Bowling]

Thanks Bob. I was thinking the same thing but had already comitted to what I
have now. Lots of code is going to need changing. ;)

"Bob" <bo*@bob.net> wrote in message
news:6k*****************@newssvr19.news.prodigy.co m...

On 14-Oct-2004, "Chuck Bowling" <ch**********@sbcglobal-NO-SPAM.net>
wrote:

I have a typed dataset with a root element - InstrumentSet with a
collection
of Instruments. Each instrument has a Comment, a Name, a SourceCode
block,

and a collection of Parameters. Like so:

<InstrumentSet>
<Instrument>
<Comment>xxx</Comment>
<Name>myName</Name>
<SourceCode>myCode</SourceCode>
<Parameter>
<P1>aaa</P1>
<P2>bbb</P2>
</Parameter>
</Instrument>
</InstrumentSet>

Yeah, I ran into the same wall. You're better off using XPath.