WillCascadeOnDelete doesn't establish cascade delete on database - entity-framework

Question

I don't know if I'm missing something obvious. We're using Entity Framework 6.0.0-rc1 in a project where the model is set up with the fluent API. Configuration of one of our entities could be:
HasMany(t => t.Entity)
.WithRequired(tc => tc.ParentEntity)
.HasForeignKey(tc => new {tc.Key1, tc.Key2})
.WillCascadeOnDelete(true);
When running this configuration, database gets created correctly, with all tables and fields. Even relationships are correctly established but not the delete cascade.
If I go to Management Studio and I inspect update/delete rules of the relationship, both are deactivated.
Thanks for your help.

Answer 1

With these classes:
public class Parent
{
public int ID { get; set; }
public ICollection<Child> Children { get; set; }
}
public class Child
{
public int ID { get; set; }
public int ParentID { get; set; }
public Parent Parent { get; set; }
}
Configured like this:
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Entity<Parent>()
.HasMany(p => p.Children)
.WithRequired(c => c.Parent)
.HasForeignKey(c => c.ParentID)
.WillCascadeOnDelete(true);
}
Puts cascade delete on the foreign key:
public override void Up()
{
CreateTable(
"dbo.Children",
c => new
{
ID = c.Int(nullable: false, identity: true),
ParentID = c.Int(nullable: false),
})
.PrimaryKey(t => t.ID)
.ForeignKey("dbo.Parents", t => t.ParentID, cascadeDelete: true)
.Index(t => t.ParentID);
CreateTable(
"dbo.Parents",
c => new
{
ID = c.Int(nullable: false, identity: true),
})
.PrimaryKey(t => t.ID);
}