請教各位前輩﹕    ADO的FilterGroup屬性中有個fgPredicate屬性值﹐其作用是只顯示剛被刪除的資料﹐但小弟在測試中點擊fgPredicate RadioButton時出現如下錯誤信息﹕ 引數中可能發生錯誤﹐超過可接受的定義範圍﹐或与其它引數發生沖突 請問該如何解決﹐還是小弟對在的理解有誤﹐相關程式碼如下﹕

procedure TForm1.RadioButton1Click(Sender: TObject);
begin
  case TRadioButton(Sender).Tag of
  0: begin
       if ADODataSet1.LockType = ltBatchOptimistic then
         begin
           ADODataSet1.Filtered := True;
           ADODataSet1.FilterGroup := fgNone;
         end;
     end;
  1: begin
       if ADODataSet1.LockType = ltBatchOptimistic then
         begin
           ADODataSet1.Filtered := True;
           ADODataSet1.FilterGroup := fgPendingRecords;
         end;
     end;
  2: begin
       if ADODataSet1.LockType = ltBatchOptimistic then
         begin
           ADODataSet1.Filtered := True;
           ADODataSEt1.FilterGroup := fgAffectedRecords;
         end;
     end;
  3: begin
       if ADODataSet1.LockType = ltBatchOptimistic then
         begin
           ADODataSet1.Filtered := True;
           ADODataSet1.FilterGroup := fgFetchedRecords;
         end;
     end;
  4: begin
       if ADODataSet1.LockType = ltBatchOptimistic then
         begin
           ADODataSet1.Filtered := True;
           ADODataSet1.FilterGroup := fgPredicate;
         end;
     end;
  end;
end;

然后其余四個RadioButton元件共用RadioButton1的OnClick事件程式碼﹒ 謝謝﹗ ========================= 大病初愈﹐休養調整中... =========================

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忻晟