Find a list of things that have a given member set to a given value: –
List<Thing> foundThings = listOfThings.FindAll(x => x.member == searchParam); if(foundThings.Count == 0) return false; // Do something with the foundThings
Find a single thing that matches a given criteria: –
Thing thing = listOfThings.Find(x => x.member == searchParam); if (thing == null) return false; // Do something with the thing