private void CB_Conveyor_SelectedIndexChanged(object sender, EventArgs e) { if (CB_Conveyor.SelectedItem != null && CB_Conveyor.SelectedItem.ToString() != "") { string[] data = db.GetConveyorInfor(CB_Conveyor.SelectedItem.ToString()); if (data != null && data.Length > 10) { CB_Commun.Checked = (data[3] != null && data[3].ToUpper() == "TRUE") ? true : false; } } }