var list1 = new List<int> { 1, 3, 5, 7, 9, 11, 13, 15 };
var list2 = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
???????????// ?List1:1 3 ??????5 ??????7 ??????9 ??????11 ?????13 ?????15
???????????Console.WriteLine("List1:" + string.Join("\t", list1));
???????????// ?List2:1 2 ??????3 ??????4 ??????5 ??????6 ??????7 ??????8 ??????9
???????????Console.WriteLine("List2:" + string.Join("\t", list2));
???????????// ?差集-List1有List2无:11 ?13 ?????15
???????????Console.WriteLine("差集-List1有List2无:" + string.Join("\t", list1.Except(list2)));
???????????// ?交集-List1有List2有:1 ??3 ??????5 ??????7 ??????9
???????????Console.WriteLine("交集-List1有List2有:" + string.Join("\t", list1.Intersect(list2)));
???????????// ?并集-包含List1和List2:1 3 5 7 9 11 13 15 ?????2 4 6 8
???????????Console.WriteLine("并集-包含List1和List2:" + string.Join("\t", list1.Union(list2)));
???????????Console.ReadLine();
AspNet ?集合交集、并集、差集操作
原文地址：https://www.cnblogs.com/Cailf/p/9671200.html