public static bool AddSupplierBL(Supplier newSupplier) { bool supplierAdded = false; try { if (ValidateSupplier(newSupplier)) { SupplierDAL supplierDAL = new SupplierDAL(); supplierAdded = supplierDAL.AddGuestDAL(newSupplier); } } catch (InventoryException) { throw; } catch (Exception ex) { throw ex; } return(supplierAdded); }