How to compare two List<String> using LINQ in C#

Question

The two lists are like

          LISTONE    "ONE", "TWO", "THREE"
          LISTTWO    "ONE", "TWO", "THREE"

i need to compare the whether the items in two lists are in same order or not.

Is there any way to do this in LINQ

Answer 1

Maybe:

bool equal = collection1.SequenceEqual(collection2);

See also: Comparing two collections for equality irrespective of the order of items in them

Answer 2

Determine if both lists contain the same data in same order:

bool result = list1.SequenceEqual(list2);

Same entries in different order:

bool result = list1.Intersect(list2).Count() == list1.Count;

Answer 3

If you know there can't be duplicates:

bool result = a.All(item => a.IndexOf(item) == b.IndexOf(item));

Otherwise

bool result = a.SequenceEquals(b)

Answer 4

List<string> list1;
List<string> list2;

bool sameOrder = list1.SequenceEqual(list2);

Answer 5

这些是正确的答案，但作为一个想法，如果你知道列表将具有相同的数据，但可能是不同的顺序，为什么不只是排序列表，以保证相同的顺序。

var newList = LISTONE.OrderBy(x=>x.[sequence]).ToList();