procedure TForm6.btn3Click(Sender: TObject);
var
  fld_Id:TIntegerField;
  fld_Value:TStringField;
  fld_Time:TDateTimeField;
begin
  //更新
  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
    begin
      Edit;
      fld_Value.AsString := ‘内容被修改‘;
      fld_Time.AsDateTime := Now;
      Post;
    end;
  end;
end;

kbmmemtable 更新表