自己实现ICollection <T> 在实体框架中可能吗？

Question

Normally POCO Classes in EF look more or less like this:

public partial class ThingEntity 
{
    public int Id { get; set; }
    public string Name { get; set; }
    public virtual ICollection<Thing> things{ get; set; }
}

They always use ICollection.

If I wanted to have more methods on the ICollection, would it be bad to write my own implementation of ICollection? I read somewhere that you shouldn't use List<T> instead of ICollection<T> , but what if I have my own implementation of ICollection?

Answer 1

You can use the collection that you want. In fact, in all my models I use List<T> , and this is really an usual pattern. In fact that's an interface, and, in the end, you need a concrete implementation of that interface.

Answer 2

I tried to write an implemented class, but aften an hour I realized that I could just write Extension Methods for ICollection<T> . That's much easier and I won't have to replace the ICollections everywhere to get the methods I need.

And this helped me to write extension methods for generic lists: How to create extension method on generic collection