kbmmemtable 查询

procedure TForm6.btn4Click(Sender: TObject);
var
  fld_Id:TIntegerField;
  fld_Value:TStringField;
  fld_Time:TDateTimeField;
begin
  //查询
    cxGrid1DBTableView1.DataController.DataSource := ds1;
  ds1.DataSet := kbmtbl1;

  with kbmtbl1 do
  begin
    Open;
    fld_Id:=TIntegerField(FieldByName('Id'));
    fld_Value:=TStringField(FieldByName('Value'));
    fld_Time:=TDateTimeField(FieldByName('Time'));
    if Locate('Id',5,[]) then
    ShowMessage(fld_Value.AsString);
    //还可以用FindKey实现，结合索引速度更快
    // kbmMemTable1.IndexFieldNames:='Id';
    //
  end;