CODEWITHSUNDEEP
c#asp.net-mvc-4entity-framework-4entity
Dirk Luijk
Dirk Luijk

Reputation: 55

Foreign key fields in Entity?

I am new to ASP.NET MVC and spend some time on creating forms for entities with related entities.

While looking for the best way to achieve this, I figured out that most examples on the Internet use an ugly way of referencing related objects.

For example, see this excerpt of the MVC Music Store tutorial:

http://s8.postimage.org/mmevixep1/orm_mvc.png http://s8.postimage.org/mmevixep1/orm_mvc.png

I found the same approach in other tutorials too, for example this one ("Modifying the Course Entity", there is a DepartmentID and an Department object).

I was confused about the fact that the whole idea behind ORM is dropped here. But I also found out that it's not (or hardly) possible to update a related entity without 'foreign key properties'.

Can someone explain why Microsoft uses this approach, and whether there are alternatives?

Upvotes: 0

Views: 116

Answers (1)

Sergio Pinto
Sergio Pinto

Reputation: 76

Foreign key fields don't have to be included in the model. Actually, this functionality was only included in .Net 4.0. This link has a god explanation about relationships in .Net Entity Framework.

Upvotes: 1

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