private void cbbGroupTourID_SelectedIndexChanged(object sender, EventArgs e) { try { var x = cbbGroupTourID.SelectedValue.ToString(); int gID = int.Parse(x); cbbTourID.DataSource = tService.GetListForGroup(gID); cbbTourID.ValueMember = "TourID"; cbbTourID.DisplayMember = "Name"; } catch { } }