Asp.net - LINQ To Objects Auto-increment Number?

This feels like a completely basic question, but, for the life of me, I can't seem to work out an elegant solution.

Basically, I am doing a LINQ query creating a new object from the query. In the new object, I want to generate a auto-incremented number to allow me to keep a selection order for later use (named Iter in my example).

Here is my current solution that does what I need:

Dim query2 = From x As DictionaryEntry In MasterCalendarInstance _
Order By x.Key _
Select New With {.CalendarId = x.Key, .Iter = 0}

[Code]....

Is there a way to do this within the context of the LINQ query (so that I don't have to loop the collection after the query)?