troubleshooting Question

Dealing with long query (ADO)

Avatar of gambuz
gambuz asked on
Delphi
22 Comments1 Solution1139 ViewsLast Modified:
Hi,

I am querying remote database server via ODBC using ADO component.

When the query is taking a long time to finish, my application becoming not-responsive.

If you click something there, Windows will response "Not-responding".

Here is my code:

procedure TForm1.Button1Click(Sender: TObject);
begin
  ADOQuery1.CommandTimeout := 3600; // 1 hour
  ADOQuery1.SQL.Clear;
  ADOQuery1.SQL.AddStrings(Memo1.Lines);
  ADOQuery1.Active := TRUE;
  ADOQuery1.ExecSQL;
// The result will be displayed in a DBGrid
end;

My question, How to ignore all events or mouse clicks during this process so the "Not-responding" will not be displayed? But the application window should still be able to MOVE and MINIMIZE / MAXIMIZE ...

Further, I need to add a CANCEL button. How?

Thanks.
ASKER CERTIFIED SOLUTION
Geert G
Oracle dba

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