Re: Like TClientDataSet.Delta,ADO can only save modified data into stream or file?


We known,if set TADODataSet.MarshalOptions as 'moMarshalModifiedOnly',ADO
only send modified data back to DBMS.
But,if savetofile or savetostream can also only save modified data?
All data is saved to the stream. The information on which records are modified
is saved so it you reload the data the TadoDataset still tracks the modified
records.



function TDMADOStream.ReadData(ADataSet: TDataSet): OLEVariant;
var
ADOStream:_Stream;
begin
ADOStream:=CoStream.Create;
try
OLEVariant(TADODataSet(ADataSet).Recordset).Save(ADOStream,adPersistADTG);
ADOStream.Position:=0;
Result:=ADOStream.Read(ADOStream.Size);
finally
ADOStream:=nil;
end;
end;


--
Brian Bushay (TeamB)
Bbushay@xxxxxxxxx
.

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