Add OrderBy to IEnumerable : IEnumerable « Collections Data Structure « C# / C Sharp

1. C# / C Sharp
2. Collections Data Structure
3. IEnumerable

Add OrderBy to IEnumerable

    
//The MIT License (MIT)
//http://arolibraries.codeplex.com/license

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading;

namespace AroLibraries.ExtensionMethods.Enumerable
{
    public static class IEnumerableExt
    {

        public static IOrderedEnumerable<TSource> Ext_OrderBy<TSource, TKey>(this IEnumerable<TSource> enumerable, Func<TSource, TKey> keySelector, bool descending)
        {
            if (enumerable == null) { return null; }
            if (descending)
            {
                return enumerable.OrderByDescending(keySelector);
            }
            return enumerable.OrderBy(keySelector);
        }
        public static IOrderedEnumerable<TSource> Ext_OrderBy<TSource>(this IEnumerable<TSource> enumerable, Func<TSource, IComparable> keySelector1, Func<TSource, IComparable> keySelector2, params Func<TSource, IComparable>[] keySelectors)
        {
            if (enumerable == null)
            {
                return null;
            }
            IEnumerable<TSource> current = enumerable;
            if (keySelectors != null)
            {
                for (int i = keySelectors.Length - 1; i >= 0; i--)
                {
                    current = current.OrderBy(keySelectors[i]);
                }
            } current = current.OrderBy(keySelector2);
            return current.OrderBy(keySelector1);
        }
        public static IOrderedEnumerable<TSource> Ext_OrderBy<TSource>(this IEnumerable<TSource> enumerable, bool descending, Func<TSource, IComparable> keySelector, params Func<TSource, IComparable>[] keySelectors)
        {
            if (enumerable == null)
            {
                return null;
            }
            IEnumerable<TSource> current = enumerable; if (keySelectors != null)
            {
                for (int i =
                    keySelectors.Length - 1; i >= 0; i--)
                {
                    current = current.Ext_OrderBy(keySelectors[i], descending);
                }
            } return current.Ext_OrderBy(keySelector, descending);
        }
   }
}

   
    
    
    
  

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