Peter.Liao

namespace ExtensionMethods
{
    public static class MyExtensions
    {
        public static IEnumerable<TResult> ZipMultiList<T1, T2, T3, T4, T5 , TResult>(
                     this IEnumerable<T1> first,
                     IEnumerable<T2> second,
                     IEnumerable<T3> third,
                     IEnumerable<T4> fourth,
                     IEnumerable<T5> fifth,
               Func<T1, T2, T3,T4,T5,  TResult> resultSelector)
        {
            using (IEnumerator<T1> iterator1 = first.GetEnumerator())
            using (IEnumerator<T2> iterator2 = second.GetEnumerator())
            using (IEnumerator<T3> iterator3 = third.GetEnumerator())
            using (IEnumerator<T4> iterator4 = fourth.GetEnumerator())
            using (IEnumerator<T5> iterator5 = fifth.GetEnumerator())
            {
                while (iterator1.MoveNext() && iterator2.MoveNext() && iterator3.MoveNext() && iterator4.MoveNext() && iterator5.MoveNext() )
                {
                    yield return resultSelector(iterator1.Current, iterator2.Current, iterator3.Current, iterator4.Current, iterator5.Current);
                }
            }
        }
    }
}

呼叫:

var output = list1.ZipMultiList( list2, list3, list4, list5,
     (n1, n2, n3, n4, n5) => new { Cn = n1, On = n2, Pk = n3, Bf = n4, Pt=n5 }).ToList();