C#•2y ago

Foreign key to Asp.net user

I am currently making a model class and for one of the fields I would like to make a foreign key referencing to the id of a user in the asp.net user table, but I am not sure how and have tried to look on google.

10 Replies

Angius•2y ago

Just do

public MyCoolUser User { get; set; }
public TKey UserId { get; set; }

public MyCoolUser User { get; set; }
public TKey UserId { get; set; }

This will be easiest, using a navigation property and the ...Id convention to tell EF this property stores the ID (TKey being the type of the key, ofc)

:•2y ago

Yeah but the user table is autocreated by asp.net so Im not sure what type mycooluser is

Angius•2y ago

So? Ah IdentityUser

:•2y ago

Oh I see

Angius•2y ago

And the ID type will be string, I believe

:•2y ago

alright I think I got it then thanks

[ForeignKey("UserId")]
        public string AuthorId { get; set; }
        
        public IdentityUser User { get; set; }

[ForeignKey("UserId")]
        public string AuthorId { get; set; }
        
        public IdentityUser User { get; set; }

should be this right?

Angius•2y ago

Or just name your nav property Author and get rid of the attribute If you have a property Foo, then a property FooId will be automatically set to store the foreign key No need for any additional config

:•2y ago

Oh I see thanks

public string LastEditedBy { get; set; }

public IdentityUser User2 { get; set; }

public string LastEditedBy { get; set; }

public IdentityUser User2 { get; set; }

will this work if I need a second fk to the same table since I cant use User again

Angius•2y ago

public string LastEditedById { get; set; }

public IdentityUser LastEditedBy { get; set; }

public string LastEditedById { get; set; }

public IdentityUser LastEditedBy { get; set; }

:•2y ago

bet, thanks

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Foreign key to Asp.net user