You can use var or IEnumerable<T> to store the result of a LINQ query. You should take care of following points while choosing between var and IEnumrable.
| var | IEnumerable |
|---|---|
| Use var type when you want to make a “custom” type on the fly. | Use IEnumerable when you already know the type of query result. |
| var is also good for remote collection since var is an IQueryable type that executes query in SQL server with all filters. | IEnumerable is good for in-memory collection. |