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Editorial Team
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Asked: 2026-05-19T01:51:44+00:00

Is there a way to create an association in entity framework that always applies

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Is there a way to create an association in entity framework that always applies a “where” filter?

Here’s an example:
Suppose that I have a database that uses “soft” deletes — so there is a “deleted” column in every table.

So if I have a Customer entity that is related to Address (1:0..n), I would like for the Addresses navigation property to always be filtered on the deleted flag, so that if I go Customer.Addresses, the collection will only return Addresses where deleted == 0.

Anyone know of some way to do that?

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1 Answer

  1. Editorial Team

    No, there isn’t.

    Same reason you can’t have a conditional foreign key.

    A workaround could be to use TPH on the Address table:

    • Create abstract entity called Address
    • Create derived entities called AddressDeleted and AddressNotDeleted
    • Set the discriminator mapping (AddressDeleted maps to Address when Deleted = 0)
    • Create a navigational property between Customer and AddressDeleted.

    So when you do ctx.Customer.Include("AddressDeleted").Single() it will only return the addresses that are flagged as deleted.

    Or you could defined an association to Address, and use ctx.Customer.Addresses.OfType<AddressDeleted>().

    Does that solve your problem?

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