Clone a purchase order and convert into cart

We have a requirement for our client that he can masquerade user and can create a new cart based on some existing Purchase Order(e.g. for damaged/lost orders).

Option 1: Get The OrderForm and other objects from PurchaseOrder and assign it to new Cart.
It did not work as result was a nasty output. On saving Purchase Order for new cart, OrderForm from Parent was assigned to new cart and parent Purchase order lost its associated OrderForms.

Option 2:

Clone the Purchase Order and create a cart based on that but it will not work because. (I tested this with EpiServer Commerce R2SP2)

Type 'Mediachase.Commerce.Orders.PurchaseOrder' in Assembly 'Mediachase.Commerce, Version=5.2.628.0, Culture=neutral, PublicKeyToken=6e58b501b34abce3' is not marked as serializable.

Solution:

We can clone OrderForms and OrderAddresses. Therefore I created a clone copy of OrderForm and order addresses and added that into the Cart.

Below piece of code helped me to achieve this. Note I have not tested/run workflows.

Cart mycart = OrderContext.Current.GetCart("replacementcart", SecurityContext.Current.CurrentUserId);

                CopyCart(mycart, Order);

//Delete and added a new Payment(Zero Charged)
//Convert into Purchase Order

        /// <summary>

        /// Copy cart

        /// </summary>

        /// <param name="_cart"></param>

        /// <param name="orderGroup"></param>

        public static void CopyCart(Cart _cart, PurchaseOrder orderGroup)

        {

            // Initial validation

            if (_cart == null) throw new ArgumentNullException("_cart");

            if (orderGroup == null) throw new ArgumentNullException("orderGroup");

            // need to set meta data context before cloning

            MetaDataContext.DefaultCurrent = OrderContext.MetaDataContext;

            OrderForm of = orderGroup.OrderForms[0].Clone() as OrderForm;

           

            // Remove existing Order Forms

            for (int i = _cart.OrderForms.Count-1 ; i>=0;i--)

            {

                _cart.OrderForms[i].Delete();

            }

            //Add order Forms to basket from PurchasOrder.

            _cart.OrderForms.Add(of);

            // Remove existing Order Addresses

            for (int i = _cart.OrderAddresses.Count-1 ; i>=0;i--)

            {

                _cart.OrderAddresses[i].Delete();

            }

            foreach (OrderAddress address in orderGroup.OrderAddresses)

            {

                MetaDataContext.DefaultCurrent = OrderContext.MetaDataContext;

                OrderAddress oa = address.Clone() as OrderAddress;

                _cart.OrderAddresses.Add(oa);

            }           

            _cart.SetParent(_cart);

            _cart.AddressId = orderGroup.AddressId;

            _cart.AffiliateId = orderGroup.AffiliateId;

            _cart.ApplicationId = orderGroup.ApplicationId;

            _cart.BillingCurrency = orderGroup.BillingCurrency;

            _cart.CustomerId = orderGroup.CustomerId;

            _cart.CustomerName = orderGroup.CustomerName;

            _cart.ProviderId = orderGroup.ProviderId;

            _cart.Status = orderGroup.Status;

            _cart.Owner = orderGroup.Owner;

            _cart.OwnerOrg = orderGroup.OwnerOrg;

            _cart.ShippingTotal = orderGroup.ShippingTotal;

            _cart.SiteId = orderGroup.SiteId;

            _cart.SubTotal = orderGroup.SubTotal;

            _cart.TaxTotal = orderGroup.TaxTotal;

            _cart.Total = orderGroup.Total;

          

            _cart.AcceptChanges();

        }