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Categories / C# / Collections Data Structure

 

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);         }    } }