if (_currListMode == ListMode.Production)  // ListMode - enum с возможными режимами редактирования
            {
                AddProduction();
            }
            else
            {
                 AddKontragent();
            }

private void toolStripDropDownButtonMode_DropDownItemClicked(object sender, ToolStripItemClickedEventArgs e)
    {
        _currListMode = e.ClickedItem == productionToolStripMenuItem ? ListMode.Production : ListMode.Kontragent;
        toolStripDropDownButtonMode.Text = e.ClickedItem.Text;
        RefreshData(false);   // обновляем грид
    }

private void AddProduction()
    {
        var pac = new Production(......);

        using (var frm = new FrmProductionEdit(pac.Clone()))
        {
            if (frm.ShowDialog(this) != DialogResult.OK) return;
            pac.CopyFrom(frm.Pac);
        }

        pac.Save();

        gridViewProduction.DataController.BeginUpdate();
        _bs.Add(pac);
        gridViewProduction.DataController.EndUpdate();
        var rh = gridViewProduction.LocateByValue("Id", pac.Id);
        if (rh != GridControl.InvalidRowHandle)
            gridViewProduction.FocusedRowHandle = rh;
    }

private void ShowForm<T>() where T : Form, new()
        {
            var form = new T();
.............................

        }