netcore-winforms-demos/OutlookInspiredApp/DevExpress.DevAV/DevExpress.DevAV.Data/Order.cs

using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace DevExpress.DevAV {
    public enum OrderShipMethod {
        [Display(Name = "Ground")]
        Ground,
        [Display(Name = "Air")]
        Air
    }
    public enum ShipmentCourier {
        None,
        [Display(Name = "FedEx")]
        FedEx,
        [Display(Name = "UPS")]
        UPS,
        [Display(Name = "DHL")]
        DHL
    }
    public enum ShipmentStatus {
        [Display(Name = "Awaiting")]
        Awaiting,
        [Display(Name = "Transit")]
        Transit,
        [Display(Name = "Received")]
        Received
    }
    public enum PaymentStatus {
        [Display(Name = "Unpaid")]
        Unpaid,
        [Display(Name = "Paid in full")]
        PaidInFull,
        [Display(Name = "Refund in full")]
        RefundInFull,
        [Display(Name = "")]
        Other
    }
    //
    public class Order : DatabaseObject {
        public Order() {
            OrderItems = new List<OrderItem>();
        }
        public string InvoiceNumber { get; set; }
        public virtual Customer Customer { get; set; }
        public long? CustomerId { get; set; }
        public virtual CustomerStore Store { get; set; }
        public long? StoreId { get; set; }
        public string PONumber { get; set; }
        public virtual Employee Employee { get; set; }
        public long? EmployeeId { get; set; }
        public DateTime OrderDate { get; set; }
        [DataType(DataType.Currency)]
        public decimal SaleAmount { get; set; }
        [DataType(DataType.Currency)]
        public decimal ShippingAmount { get; set; }
        [DataType(DataType.Currency)]
        public decimal TotalAmount { get; set; }
        public DateTime? ShipDate { get; set; }
        public OrderShipMethod ShipMethod { get; set; }
        public string OrderTerms { get; set; }
        public virtual List<OrderItem> OrderItems { get; set; }
        public ShipmentCourier ShipmentCourier { get; set; }
        public string ShipmentCourierId { get; set; }
        public ShipmentStatus ShipmentStatus { get; set; }
        public string Comments { get; set; }
        // Payment/Refund
        [DataType(DataType.Currency)]
        public decimal RefundTotal { get; set; }
        [DataType(DataType.Currency)]
        public decimal PaymentTotal { get; set; }
        [NotMapped]
        public PaymentStatus PaymentStatus {
            get {
                if(PaymentTotal == decimal.Zero && RefundTotal == decimal.Zero)
                    return DevAV.PaymentStatus.Unpaid;
                if(RefundTotal == TotalAmount)
                    return DevAV.PaymentStatus.RefundInFull;
                if(PaymentTotal == TotalAmount)
                    return DevAV.PaymentStatus.PaidInFull;
                return DevAV.PaymentStatus.Other;
            }
        }
        [NotMapped]
        public double ActualWeight {
            get {
                var weight = 0.0;
                if(OrderItems != null)
                    foreach(var item in OrderItems)
                        if(item.Product != null)
                            weight += item.Product.Weight * item.ProductUnits;
                return weight;
            }
        }

    }
}