通過使用匿名類型來構造一個多屬性連接查詢表達式

1 var orders = from o in context.Orders
2     join a in context.Accounts on
3     // 使用匿名類型來構造一個複合的查詢表達式
4     new { Id = o.AccountId, City = o.ShipCity, State = o.ShipState }
5     equals
6     new { Id = a.AccountId, City = a.City, State = a.State }
7     select o;