Remotely databind a Collection with Spike & Knockout.js

using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Linq;
using System.Text;

namespace MyList
{
    /// <summary>
    /// Represents an event send remotely.
    /// </summary>
    public struct SyncListEvent
    {
        /// <summary>
        /// Constructs a new instance of <see cref="SyncListEvent"/>.
        /// </summary>
        /// <param name="args">Event arguments to clone.</param>
        public SyncListEvent(NotifyCollectionChangedEventArgs args)
        {
            this.Action = args.Action;
            this.NewItems = args.NewItems;
            this.NewIndex = args.NewStartingIndex;
            this.OldItems = args.OldItems;
            this.OldIndex = args.OldStartingIndex;
        }

        /// <summary>
        /// Constructs a new instance of <see cref="SyncListEvent"/>.
        /// </summary>
        /// <param name="items">A list of items to forward.</param>
        public SyncListEvent(IList items)
        {
            this.Action = NotifyCollectionChangedAction.Reset;
            this.NewItems = items;
            this.NewIndex = 0;
            this.OldItems = null;
            this.OldIndex = -1;
        }

        /// <summary>
        ///  Gets the action that caused the event.
        /// </summary>
        public readonly NotifyCollectionChangedAction Action;

        /// <summary>
        /// Gets the list of new items involved in the change.
        /// </summary>
        public readonly IList NewItems;

        /// <summary>
        /// Gets the index at which the change occurred.
        /// </summary>
        public readonly int NewIndex;

        /// <summary>
        /// Gets the list of items affected by a Replace, Remove, or Move action.
        /// </summary>
        public readonly IList OldItems;

        /// <summary>
        /// Gets the index at which a Move, Remove, or Replace action occurred.
        /// </summary>
        public readonly int OldIndex;

    }
}