title: How do I get the value of the Discriminator Column from an Entity Framework Entity
body: <p>I've got a project in written in the EDM.  Does anyone know how to get the value of the discriminator column from an entity in a TPH inheritance tree?  I can't add the property to the entity.  Is there any other way to get the value?</p>
  
  <p>Thanks,<br/>
  Roy</p>