How to check if the file already exists in the client directory

Question

Hi all.
I'm on devsuite 10g. I'm using webutil to download files from DB using webutil function db_to_client.
What I need is to check if the file already exists in the client directory and if yes to display a message to ask the user if he wants to overwrite or no. How can I make this???
Here is the code that I'm using to download the file.
Thanks all for the collaboration.
Fabrizio
declare
file_path varchar2(2000) := null;
BEGIN
/** I ask where saving the file on the client machine **/
file_path:= webutil_file.file_selection_dialog
(directory_name => null,
file_name => :bin_docs.name,
file_filter => '',
title => 'Saving file',
dialog_type => save_file, --save_file
select_file => TRUE);
/** I download the file from DB to client **/
if webutil_file_transfer.DB_To_Client_With_Progress
( file_path ,
'BIN_DOCS',
'DOC' ,
'doc_id = '||:bin_docs.doc_id,
'Downloading file',
' '||:bin_docs.name) then
msg_alert('Download del file avvenuto con successo','I',false);
else
msg_alert('Si è verificato il seguente errore in fase di download '||SQLERRM,'I',false);
end if;
end;

Answer 1

How about something like the below:
Note: I have a yes/no alert to asking if they want to over-write the existing file.
DECLARE
file_path VARCHAR2(2000) := null;
over_write BOOLEAN := TRUE;
BEGIN
/** I ask where saving the file on the client machine **/
file_path:= webutil_file.file_selection_dialog
(directory_name => null,
file_name => :bin_docs.name,
file_filter => '',
title => 'Saving file',
dialog_type => save_file, --save_file
select_file => TRUE);
IF webutil.file_exists(file_path) THEN
/** check a file by the same name exists in the selected directory **/
IF show_alert('Ask_overright') != alert_button1 THEN
/** If we say no then set over_write value to false **/
over_write := FALSE;
END IF;
END IF;
IF over_write THEN
/** I download the file from DB to client **/
IF webutil_file_transfer.DB_To_Client_With_Progress
( file_path ,
'BIN_DOCS',
'DOC' ,
'doc_id = '||:bin_docs.doc_id,
'Downloading file',
' '||:bin_docs.name) then
msg_alert('Download del file avvenuto con successo','I',false);
ELSE
msg_alert('Si è verificato il seguente errore in fase di'
||' download '||SQLERRM,'I',false);
END IF
END IF;
END;
cheers
Q