private void BTN_AddWrkOrd_Click(object sender, EventArgs e) { WorkOrder W = new WorkOrder(); W.Numarator = W.GetOrderNum(); if (CB_MachName.SelectedValue != null && CB_CatNum.SelectedValue != null && !string.IsNullOrEmpty(Txt_Qty.Text)) { W.Machine = new Machine(CB_MachName.SelectedValue.ToString()); W.CatNum = new Item(int.Parse(CB_CatNum.SelectedValue.ToString())); W.Qty = int.Parse(Txt_Qty.Text); W.AddNew(LoggedInUser); MessageBox.Show(string.Format("Work Order {0} was successfully added to the DB", W.Numarator)); FillOrdersList(); ResetCB(); } }