How to disable key

[maloo]

Hi,
when mapping a type to Json, having an "int Id" will make it fail. How do I tell EF Core that Id is NOT a Key? Please add that to this page. Now it just shows how to tell EF Core WHAT is a Key. I tried renaming Id to like NotId and that works (but I need it to be called Id), I also tried [Keyless] but that gave me another error ...

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Document Details

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• ID: d0a084df-15c4-ab25-26ca-83c8bdf6f026
• Version Independent ID: f1fba5b2-eb2e-da0a-fce0-d492855c1777
• Content: Keys - EF Core
• Content Source: entity-framework/core/modeling/keys.md
• Product: entity-framework
• Technology: entity-framework-core
• GitHub Login: @AndriySvyryd
• Microsoft Alias: avickers

[ajcvickers]

@maloo modelBuilder.Entity<Foo>().HasNoKey().

[maloo]

I tried [Keyless] which I guess is the same but it still failed. I reached out to SO and got some help. The exceptions related to keys and ordinal keys in Json columns are really hard to decode. Please update the docs around this (or fix the Id column issue with Json columns).

Here's the SO issue: https://stackoverflow.com/questions/76789993/why-cant-i-map-an-array-of-child-items-to-json

BTW I think there's a bug in one of the Json column validation messages. The use of .First() to get a parameter for the message on an empty enumerator throws so you don't get the error message of the exception.

[ajcvickers]

Duplicate of #29380.