C# - List - remove all elements but NOT the first four

Question

I have a list of elements, however if the number of list elements is greater than 4 I want to remove all elements but leave the first 4 only in the list. Example: List<> - 1, 2, 3, 4, 5, 6, 7, 8 The new list should be - 1,2,3,4 I am looking at using List.RemoveAll() but not sure what to put in the parentheses Looking forward to some help .... Steven

Accepted Answer

Why not use `List.RemoveRange`:

```
if (list.Count > 4)
{
    list.RemoveRange(4, list.Count - 4);
}
```

(That's assuming you want to mutate the existing list. If you're happy creating a new sequence, I'd definitely use `list.Take(4)` as per Adam's suggestion, with or without the `ToList` call. These days I tend to build queries rather than mutating existing collections.)

C# - List - remove all elements but NOT the first four

Solution

Problem