Expression sorting

ExpressionSortingExtensions.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Linq.Expressions;

namespace ExpressionSorting
{
    /// <summary>
    /// This is a little too clever, it looks like voodoo, but it makes the higher level API totally beautiful.
    /// </summary>
    public static class ExpressionSortingExtensions
    {
        /// <summary>
        /// Sort by a property expression, with usage like someCollection.OrderByExpression(x=>x.SomeProp);
        /// </summary>
        public static IEnumerable<TTypeBeingSorted> OrderByExpression<TTypeBeingSorted>(this IEnumerable<TTypeBeingSorted> src, Expression<Func<TTypeBeingSorted, object>> selectorThatPicksThePropertyToSortBy, ListSortDirection direction = ListSortDirection.Ascending)
        {
            if (selectorThatPicksThePropertyToSortBy == null)
            {
                return src;
            }
            
            var selectedProperty = selectorThatPicksThePropertyToSortBy.Compile();

            Func<IEnumerable<TTypeBeingSorted>, IEnumerable<TTypeBeingSorted>> orderingFunction = r => r.OrderBy(selectedProperty); 
            if (direction == ListSortDirection.Descending)
            {
                orderingFunction = r => r.OrderByDescending(selectedProperty);
            }

            return orderingFunction(src);
        }
    }
}