How to get the difference of two list in C# using LINQ

Question

I've two lists like

List<String> LISTONE=new List<String>() 

and

List<String> LISTTWO=new List<String>() 

and which contains

LISTONE   "A"
          "B"
          "C"
LISTTWO   "A"
          "D"
          "E"

and the required out put is

LISTTEMP  "B"   
          "C"
          "D"
          "E"

is there any way to do this using LINQ

Answer 1

可以使用Except（）和Concat（） LINQ方法来完成：

LISTONE.Except(LISTTWO).Concat(LISTTWO.Except(LISTONE))

Answer 2

LISTONE.Except(LISTTWO).Union(LISTTWO.Except(LISTONE)) //.Distinct()?

编辑：联合方法实现不同的行为，所以不同将是多余的。

Answer 3

Assuming you want "All elements which do not appear in both lists", in which case, as my note above mentions, "B" should also be in there. this is the linq'ed answer.

one.Concat(two).Except(one.Intersect(two))