How to perform left outer join in C# LINQ to objects without using join-on-equals-into
clauses? Is there any way to do that with where
clause? Correct problem: For inner join is easy and I have a solution like this
List<JoinPair> innerFinal = (from l in lefts from r in rights where l.Key == r.Key select new JoinPair { LeftId = l.Id, RightId = r.Id})
but for left outer join I need a solution. Mine is something like this but it’s not working
List< JoinPair> leftFinal = (from l in lefts from r in rights select new JoinPair { LeftId = l.Id, RightId = ((l.Key==r.Key) ? r.Id : 0 })
where JoinPair
is a class:
public class JoinPair { long leftId; long rightId; }