2 // TypedTableBaseExtensions.cs
5 // Atsushi Enomoto <atsushi@ximian.com>
7 // Copyright (C) 2008 Novell, Inc. http://www.novell.com
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15 // distribute, sublicense, and/or sell copies of the Software, and to
16 // permit persons to whom the Software is furnished to do so, subject to
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19 // The above copyright notice and this permission notice shall be
20 // included in all copies or substantial portions of the Software.
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32 using System.Collections.Generic;
37 public static class TypedTableBaseExtensions
40 public static EnumerableRowCollection<TRow> AsEnumerable<TRow> (this TypedTableBase<TRow> source) where TRow : DataRow
42 return new EnumerableRowCollection<TRow> (source);
45 public static OrderedEnumerableRowCollection<TRow> OrderBy<TRow, TKey> (this TypedTableBase<TRow> source, Func<TRow, TKey> keySelector)
48 return OrderBy<TRow, TKey> (source, keySelector, Comparer<TKey>.Default);
51 public static OrderedEnumerableRowCollection<TRow> OrderBy<TRow, TKey> (this TypedTableBase<TRow> source, Func<TRow, TKey> keySelector, IComparer<TKey> comparer)
54 return OrderedEnumerableRowCollection<TRow>.Create<TRow, TKey> (source, keySelector, comparer, false);
57 public static OrderedEnumerableRowCollection<TRow> OrderByDescending<TRow, TKey> (this TypedTableBase<TRow> source, Func<TRow, TKey> keySelector)
60 return OrderByDescending<TRow, TKey> (source, keySelector, Comparer<TKey>.Default);
63 public static OrderedEnumerableRowCollection<TRow> OrderByDescending<TRow, TKey> (this TypedTableBase<TRow> source, Func<TRow, TKey> keySelector, IComparer<TKey> comparer)
66 return OrderedEnumerableRowCollection<TRow>.Create<TRow, TKey> (source, keySelector, comparer, true);
69 public static EnumerableRowCollection<S> Select<TRow, S> (this TypedTableBase<TRow> source, Func<TRow, S> selector)
72 return new EnumerableRowCollection<S> (Enumerable.Select<TRow, S> (source, selector));
75 public static EnumerableRowCollection<TRow> Where<TRow> (this TypedTableBase<TRow> source, Func<TRow, bool> predicate)
78 return new EnumerableRowCollection<TRow> (Enumerable.Where<TRow> (source, predicate));