What's better for creating distinct data structures: HashSet or Linq's Distinct()?

Question

I\'m wondering whether I can get a consensus on which method is the better approach to creating a distinct set of elements: a C# HashSet or using IEnumera

Answer 1

If yor looping through the results of a DbReader adding your resutls to a Hashset would be better than adding it to a List and than doing a Distinct on that. You would save one itteration. (Distinct internally uses a HashSet)