Listing All Active Directory Groups

Question

The following code lists some, but not all, Active Directory Groups. Why?

I am trying to list all security groups, distribution groups, computer groups etc. Have I

Answer 1

To retrieve a set of results that is larger than 1000 items, you must set SizeLimit to its default value (zero) and set PageSize to a value that is less than or equal to 1000.

objSearchADAM.PageSize = 1000;