The answer depends on the way you modeled your entities. If you are using common independent relation or foreign key relation you will have to use your current approach – I’m using it as well in my project.
If you defined identifying relation you will be able to call just Clear
on collection as @Craig described. Identifying relation is special relation where primary key of dependent entity contains foreign key of parent entity.
The example shows Order
entity and OrderItem
entity with foreign key identifying relation between them. Primary key of OrderItem
consists of unique Id
and OrderId
which is FK of Order
table. With this configuration you don’t need to iterate through OrderItem
s and delete each item separately. Simply removing OrderItem
from collection will be executed as delete in database and clearing collection will delete all related OrderItem
s in database.