Destroying reportbuolder fields

rbuser

Hello,

I was testing version 7.091 i noticed the following thing:
I have a datamodule containg a reportbuilder component.

In this datamodule i have my own method "CloseDatamodule" which is called
before the datamodule is destroyed:

if Assigned(FDataModuleInstance) then
begin
FDataModuleInstance.CloseDataModule;
FreeAndNil(FDataModuleInstance);
end;


The method "CloseDatamodule" has this code:

// Disconnect all ado data components
for i := 0 to ComponentCount - 1 do
begin
if ( (Components[i] is TCustomAdoDataSet)
and (Components[i] as TCustomAdoDataSet).Active
) then
begin
if ((Components[i] as TCustomAdoDataSet).State in [dsInsert,
dsEdit]) then
begin
(Components[i] as TCustomAdoDataSet).Cancel;
end;

(Components[i] as TCustomAdoDataSet).Close;
end;
end;


When the code starts the ComponentCount is 157.
Then i get an index of bound on nr 75.
Debugging whats happingen i noticed that the Reprtbuilder objects where
beining destroyed during the
for i := 0 to ComponentCount - 1 do
loop. So when the loop started they where there, when the loop is at point
75 they are all gone!!!

Setting the propertty "AutoCreateFields" to false, helped to overcome the
error.
Wat is behaviour already in the eraly packages ( <= 7.04?????)

Eric

nardmoseley

There is not enough information here for me to determine what is happening.

If I were debugging this problem, I would add RBuilder\Source and
Delphi\Lib\Debug to the Delphi environment library path. Then place a stop
in the TComponent.Destroy method (Classes.pas) and the
TppCommunicator.Destroy method (RBuilder\Source\ppComm.pas).

If you would like to create a simple, minimal Delphi project and email in
zip format to support@digital-metaphors.com we can check it out here. Please
use only standard Delphi components and RB.


--
Nard Moseley
Digital Metaphors Corporation
www.digital-metaphors.com