Find next record in a set: LINQ

Question

I have a list of objects which all have an id property

E.g

1, 10, 25, 30, 4

I have a currentId and I need to find the next Id in the list

So

Answer 1

There are quite a few solution. I suggest something like the following.

var next = items
    .Where(item => item.Id > currentId)
    .OrderBy(item => item.Id)
    .First();

var next = items
    .OrderBy(item => item.Id)
    .First(item => item.Id > currentId);

If you want the ids in the order they appear in the collection, you could use the following.

var next = items
    .SkipWhile(item => item.Id != currentId)
    .Skip(1)
    .FirstOrDefault();

If this returns null, you have tried to get next item of the last item.