how count objects returned an objectquery<t>?

i am building an objectquery this:

        twine query = "select value obj entities.class obj " +
                       "where obj.property = @value";

        objectquery<class> oquery = new objectquery<class>(query, entitycontext.instance);
        oquery.parameters.add(new objectparameter("value", somevariable));

i distribute vigilant datasource control, iterate foreach loop even force coming list, however, i i count array objects returned, but forcing materialization?

do i need emanate follower query govern count() there duty me somewhere?

thank you.