Can I access the discriminator value in TPH mapping with Entity Framework 4 CTP5

entity-framework-4 code-first entity-framework-ctp5
David Glenn picture David Glenn · Dec 24, 2010 · Viewed 10.1k times · Source

Using Entity Framework 4 CTP5 Code First and this example

Is it possible to access the discriminator value?

I would like to use it in a projection like

context.BillingDetails.Select(x => new { Number = x.Number, DiscrimitatorValue = /* how do I get the discriminator value? */ });

From this post I understand the discriminator cannot be mapped to a property but is there any other way of accessing it?

Answer

Paul picture Paul · Jun 11, 2013

I may be late to the game on this one, but I just added a getter property to the base class that returned the name of the current type:

public string DiscriminatorValue {
    get {
        return this.GetType().Name;
    }
}

Since by default EF is going to use this same value for the Discriminator field, they will match up.

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