Get Non-Distinct elements from an IEnumerable

Question

I have a class called Item. Item has an identifier property called ItemCode which is a string. I would like to get a list of all non-distinct Items in a list of Items.

E

Answer 1

My take:

var distinctItems = 
    from list in itemsList
    group list by list.ItemCode into grouped
    where grouped.Count() > 1
    select grouped;