Master/Detail Pipeline problem

rbuser

Hi,

I created two DBPipelines Master and detail. within detail DBPipeline I try
AddLink and the following tips that is create masterFieldLink.

The first master record always show all the detail records, and the
following master showing fine. I spend almost two days try to figure out
this simple things.

I am using the lastest RB with RAD 2007

Please help what I did wrong.

JF


---------------------------------------------------------
Tech Tip: Define Master/Detail DataPipeline Links in Code
---------------------------------------------------------

Defining a Master/Detail relationship for a DataPipeline
requires that the detail pipeline have the
following properties defined:

1. MasterDataPipeline

2. MasterFieldLinks


At Delphi design-time you can use the object inspector
and the DataPipeline's FieldLinks editor to define
the master/detail relationship.


The following example illustrates how to define the
master/detail relationship dynamically at run-time.


var
lFieldLink: TppMasterFieldLink;


begin

{define the master/detail pipeline relationship}
plDetail.MasterDataPipeline := plMaster;

{create a new field link }
lFieldLink := TppMasterFieldLink.Create(nil);

lFieldLink.Parent := plDetail;

{assign the detail field name}
lFieldLink.DetailFieldName := 'CustNo';

{assign the master field name}
lFieldLink.MasterFieldName := 'CustNo';


end;

nicocizik

Hi JF,

In my quick testing with the DBDEMOS database and using the exact code
provided with the article you posted, I was able to successfully link two
datapipelines in a master-detail relationship in code.

Where are you executing this code? Be sure your detail dataset is ordered
on the linking field.

--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Hi, Nick

I found problem. It is because DevExpress grid share the same datasource
with datapipeline.

It is hard to figure out since the only first master record have the
problem.

Thanks

JF