How to configure Domain Classes to use ObservableCollection using EF? - entity-framework

Question

I have started using Entity Framework Code First modeling technique and have seen many examples of implementing one to many (1-N) relationship using DataAnnotation and FluentAPI but all examples are using ICollection while modeling domain classes. I have already used generic ObservableCollection in my domain classes and do not intent to change it.
Currently while specifying the configuration using FluentAPI, i am getting following error:
HasRequired(t => t.App)
.WithMany(t => t.EndPoints) // error here
.HasForeignKey(t => t.App);
Cannot implicitly convert Type 'EndPoints' to 'ICollection'.
Note: EndPoints class is implemented using ObservableCollection.
My question is how to make it work?
Following is my entity definition:
public class ModelBase
{
public Guid Id { get; set; }
public string Name { get; set; }
}
public class RuleApp : ModelBase
{
public EndPoints EndPoints { get; set; }
}
public class EndPoint : ModelBase
{
public RuleApp RuleApp { get; set; }
}
public class EndPoints : GenericObservableCollection<EndPoint> { }
public class GenericObservableCollection<T> : ObservableCollection<T>
{
// other common stuff handling
}

Answer 1

This is an Example to do that :
public class ModelBase
{
public Guid Id { get; set; }
public string Name { get; set; }
}
public class RuleApp : ModelBase
{
//This for create RelationShip
public virtual ICollection<EndPoint> EndPoints { get; set; }
[NotMapped]
Public EndPoints GenericEndPoints { get; set; }
public void TransferToGenric()
{
GenericEndPoints =new EndPoints(EndPoints)
}
}
public class EndPoint : ModelBase
{
public RuleApp RuleApp { get; set; }
}
public class EndPoints : GenericObservableCollection<EndPoint> { }
public class GenericObservableCollection<T> : ObservableCollection<T>
{
// other common stuff handling
}
If you use GenericObservableCollection as a Property EF Mapped all property in your calss, so I create just a property to use endpoint and after that i transform it to the GenericObserveableCollection.
in the constractor of you EndPoins class you have to featch all data in endpoint to do what you want