#if NET20 using System; using System.Collections.Generic; using System.Text; namespace System.Linq { /// <summary></summary> public static class Enumerable { /// <summary></summary> public static List<T> ToList<T>(this IEnumerable<T> items) { var list = new List<T>(); foreach (var item in list) list.Add(item); return list; } /// <summary></summary> public static T[] ToArray<T>(this IEnumerable<T> items) { return ToList(items).ToArray(); } /// <summary></summary> public static List<TResult> Select<TSource, TResult>(this IEnumerable<TSource> items, Func<TSource, TResult> selector) { if (items == null) return new List<TResult>(); var list = new List<TResult>(); foreach (var item in items) list.Add(selector.Invoke(item)); return list; } } } #endif