Scaffolding model with inheritance in ASP.NET MVC 3 and Entity Framework - asp.net

Question

I'm trying out the new scaffolding features in MVC 3, using Entity Framework Code First. My model looks like this:
public abstract class A
{
public int Id { get; set; }
}
public class B : A
{
public string Name { get; set; }
}
public class MyContext : DbContext
{
public DbSet<A> As { get; set; }
}
I create a new controller using the new controller wizard in MVC and select to scaffold type A. CRUD code is generated and I can successfully start the project in a webbrowser. When I try to create a new A, I get the following error message:
"Cannot create an abstract class"
which makes sense. A is abstract.
Can I use scaffolding to create B's and other inherited classes from A?

Answer 1

AFAIK you should add a
using System.ComponentModel.DataAnnotations;
[Table("TableNameForB")]
public class B : A
{
public string Name { get; set; }
}
as attribute for your concrete class
Find here a complete example
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.Entity;
using System.ComponentModel.DataAnnotations;
namespace ZooLabPoco
{
public class Context : DbContext
{
public DbSet<Animal> Animals { get; set; }
public DbSet<Zoo> Zoos { get; set; }
}
public class Zoo
{
public int Id { get; set; }
public virtual ICollection<Animal> Animals { get; set; }
public Zoo()
{
this.Animals = new List<Animal>();
}
}
public abstract class Animal
{
public int Id { get; set; }
public int ZooId { get; set; }
public virtual Zoo Zoo { get; set; }
}
[Table("Lions")]
public class Lions : Animal
{
public string LionName { get; set; }
}
[Table("Tigers")]
public class Tigers : Animal
{
public string TigerName { get; set; }
public int TailLength { get; set; }
}
class Program
{
static void Main(string[] args)
{
var context = new Context();
context.Database.Delete();
context.Database.CreateIfNotExists();
var zoo = new Zoo();
zoo.Animals.Add(new Lions { LionName = "Fritz" });
zoo.Animals.Add(new Lions { LionName = "Jerry" });
zoo.Animals.Add(new Tigers { TigerName = "Pluto" });
context.Zoos.Add(zoo);
context.SaveChanges();
}
}
}