List<int> a = new List<int>() { 1, 2, 3, 6, 8, 7 }; List<int> b = new List<int>() { 1, 2, 3, 4, 5, 6 }; List<int> c = b.Except(a).ToList(); foreach (int i in c) { Console.WriteLine(i); //4 5 } Console.Read();
原文：http://www.cnblogs.com/gxivwshjj/p/3755234.html