Re: invalid class typecast

Are you sure that your 'REFNO' detected as TLargeIntField in Delphi?

Anyway try the next instead:
Parameters.ParamByName('REFNO').Value := qry2.FieldByName('REFNO').Value;

--
With best regards, Mike Shkolnik
EMail: mshkolnik@xxxxxxxxxxxxx
http://www.scalabium.com

"yc" <yc@xxxxx> wrote in message news:426cc59b$1@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> Hi,
>
> I'am trying to use TLargeIntField, it is giving me a headache.
>
> I've two Access tables tbl1 and tbl2 (qry1 and qry2).
> Using TLargeIntField field type as follows, I get an invalid class
typecast exception.
>
> var
> li : TLargeIntField;
> begin
> with qry1 do
> begin
> Close;
> li := qry2.FieldByName('REFNO') as TLargeIntField; //EXCEPTIO is here
> Parameters.ParamByName('REFNO').Value := li.Value;
> Open;
> end;
> end;
>
> Any idea ?
>
> Thanks in advance
> yc


.

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