unable to write Linq query -

i have sql query. want convert linq query. userlinks , userroles c# classes represent dbase tables.

select distinct userlinks.linkid userlinks     roleid in (select roleid userroles userid=1) , userlinks.enable='true' 

var roleids = userroles.where(u => u.userid == 1)                             .select(r=>r.roleid)                             .tolist(); var result = userlinks.where(u => roleids.contains(u.roleid) && u.enable)                             .select(l => l.linkid)                             .distinct()                             .tolist();