prs/prs.classes/Entities/Bill/Bill.cs

using System;
using InABox.Core;

namespace Comal.Classes
{
    [UserTracking("Accounts Payable")]
    public class Bill : Entity, IPersistent, IRemotable, ILicense<AccountsPayableLicense>
    {
        [EntityRelationship(DeleteAction.Cascade)]
        public SupplierLink SupplierLink { get; set; }

        [DateEditor]
        public DateTime Date { get; set; }

        [TextBoxEditor]
        public string Number { get; set; }

        [DoubleEditor(Editable = Editable.Hidden, Summary = Summary.Sum)]
        [Aggregate(typeof(BillExTax))]
        public double ExTax { get; set; }

        [DoubleEditor(Editable = Editable.Hidden, Summary = Summary.Sum)]
        [Aggregate(typeof(BillTax))]
        public double Tax { get; set; }

        [DoubleEditor(Editable = Editable.Hidden, Summary = Summary.Sum)]
        [Aggregate(typeof(BillIncTax))]
        public double IncTax { get; set; }

        [CurrencyEditor(Editable = Editable.Hidden, Summary = Summary.Sum)]
        [Aggregate(typeof(BillAmountPaid))]
        public double AmountPaid { get; set; }

        [CurrencyEditor(Editable = Editable.Hidden, Summary = Summary.Sum)]
        [Formula(typeof(BillBalance))]
        public double Balance { get; set; }

        [TimestampEditor]
        public DateTime Checked { get; set; }

        [TimestampEditor]
        public DateTime Approved { get; set; }

        [Aggregate(typeof(BillDocumentCount))]
        [IntegerEditor(Editable = Editable.Hidden)]
        public int Documents { get; set; }

        protected override void Init()
        {
            base.Init();
            SupplierLink = new SupplierLink(() => this);
        }

        protected override void DoPropertyChanged(string name, object before, object after)
        {
            base.DoPropertyChanged(name, before, after);
            if (name.Equals("AmountPaid") || name.Equals("IncTax"))
                Balance = IncTax - AmountPaid;
        }
    }
}