/// <summary><para>Returns an <see cref="IEnumerable{T}"/> of <see cref="DataColumn"/> values that represents <paramref name="collection"/>.</para></summary> /// <param name="collection"><para>The target of the extension method.</para></param> /// <returns><para><see cref="IEnumerable{T}"/> of <see cref="DataColumn"/> values or <see cref="Enumerable.Empty{TResult}"/>.</para></returns> public static IEnumerable <DataColumn> Select(this DataColumnCollection collection) => collection.Select(dc => dc);