private void PopulateComboBoxes() { string macName = Properties.Settings.Default.machinename; DBConnect dbc = new DBConnect(); ArrayList partNames = dbc.GetPartNames(macName,this.cat); ArrayList OperNames = dbc.GetOperationNames(macName); foreach (ComboBox cb in parts) { cb.Items.Clear(); cb.Items.AddRange(partNames.ToArray()); } foreach (ComboBox cb in opr) { cb.Items.Clear(); cb.Items.AddRange(OperNames.ToArray()); } }