REFLECTION .NET

using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Collections.Generic;
using System.Reflection;

namespace Tests
{
    /// <sumary> 
    /// Type permettant de spécifier le sens du tri
    /// <sumary> 
    public enum OrderType : int { Asc = 1, Desc = -1 }

    /// <sumary> 
    /// Interface à implémenter pour la gestion de collections triables
    /// <sumary> 
    public interface IOrderableCollection
    {
        /// <sumary> 
        /// Obtient ou définit la propriété sur laquelle la collection est triée
        /// <sumary> 
        PropertyInfo PropertyOrder { get; set; }
        /// <sumary> 
        /// Obtient ou définit le sens du tri
        /// <sumary> 
        OrderType OrderType { get; set; }
        /// <sumary> 
        /// Tri la liste en fonction du nom du champ et du sens de tri
        /// <sumary> 
        void Sort(string fieldName, OrderType orderType);
    }

    /// <sumary> 
    /// Exemple d'implémentation sur une collection generics
    /// <sumary> 
    public class OrderableList<T> : List<T>, IOrderableCollection
    {
        public PropertyInfo PropertyOrder { get; set; }
        public OrderType OrderType { get; set; }

        public void Sort(string fieldName, OrderType orderType)
        {
            this.OrderType = orderType;
            this.PropertyOrder = typeof(T).GetProperty(fieldName);
            if (this.PropertyOrder != null) this.Sort(Compare);
        }

        private int Compare(T t1, T t2)
        {
            object obj1 = this.PropertyOrder.GetValue(t1, null);
            object obj2 = this.PropertyOrder.GetValue(t2, null);

            IComparable obj1Comparable = obj1 as IComparable;
            if (obj1Comparable != null)
                return obj1Comparable.CompareTo(obj2) * (int)this.OrderType;
            return 0;
        }
    }
}