"Object reference not set to an instance of an object" even when I checked null
.net, c#, linq, null, reference
Solution
One of your rooms in the enumerable is null. Do this:
return room.Where(r => r != null)
.SelectMany(r => r.Beds);
Problem
I have `Room` and `Bed` EF classes which each of `Room` have some `Bed`s.when I use this LINQ statement: ``` IEnumerable<Room> room=... if (room == null || !room.Any()) return null; return room.SelectMany(r=>r.Beds); ``` give me this error: Object reference not set to an instance of an object. in `return` line.