Range Retrieval
It is possible for a directory to store multivalued values in
ranges. You can retrieve these ranges by using the RetrieveRanges method. Only string or byte[] can be used.
string dn = "CN=IT Users,CN=Groups,DC=example,DC=com";
IList<string> members;
members = context.RetrieveRanges<string>(dn, "member", 0);