GetTuple extension

GetTuple.cs

//Based on http://stackoverflow.com/a/4785149/31532

public static Tuple<Expression<Func<T, object>>, SortOrder> GetTuple<T>(this IEnumerable<T> source, Expression<Func<T, object>> expression, SortOrder sortOrder)
{
  return new Tuple<Expression<Func<T, object>>, SortOrder>(expression, sortOrder);
}

//Usage
foreach (var per in people.OrderByMany(
  people.GetTuple(x => x.Age, SortOrder.Descending), 
  people.GetTuple(x => x.Name, SortOrder.Ascending)))
{
    Console.WriteLine("{0} Age={1}", per.Name, per.Age);
}