protected override void btnOK_Clicked(object o, System.EventArgs args)
        {
            if (!SelectedItem.CheckIsNewFormat())
            {
                MessageError.ShowDialog(string.Format(Translator.GetString("This stock-taking cannot be edited because it is created with an older version of {0}! Only new stock-taking operations can be edited."), DataHelper.ProductName));
                return;
            }

            base.btnOK_Clicked(o, args);
        }