public List <Item> GetItemsByCompany(int companyId)
 {
     return(ItemManager.GetItemsByCompany(companyId));
 }
 public Item GetItemById(int id)
 {
     return(ItemManager.GetItemById(id));
 }
 public StockOutManager()
 {
     CompanyManager  = new CompanyManager();
     ItemManager     = new ItemManager();
     StockOutGateway = new StockOutGateway();
 }