OrderEventsInit.cs

using EPiServer.Commerce.Order;
using EPiServer.Framework;
using EPiServer.Framework.Initialization;

namespace Foundation._EuromonitorExample
{
    [InitializableModule]
    [ModuleDependency(typeof(EPiServer.Web.InitializationModule))]
    public class OrderEventsInit : IInitializableModule
    {
        public void Initialize(InitializationEngine context)
        {
            var orderEvents = context.Locate.Advanced.GetInstance<IOrderEvents>();
            orderEvents.SavedOrder += OrderEvents_SavedOrder;
        }

        private void OrderEvents_SavedOrder(object sender, OrderEventArgs e)
        {
            var orderGroup = e.OrderGroup;
            var orderReference = e.OrderLink;
        }

        public void Uninitialize(InitializationEngine context) { }
    }
}