Can you define an interface so that the class that implements it must contain a member that also belongs to this class?

Question

Essentially, I want it to be a class that can contain a list of references to instances of the same type. Something like the following:

interface IAccessibilityFeature { List<IAccessibilityFeature> Settings { get; set; } } class MyAccess : IAccessibilityFeature { List<MyAccess> Settings { get; set; } } 

I know that this will not compile, because the interface explicitly says that my Settings should be of type List<IAccessibilityFeature> . What I need is some guidance on the right way to achieve what I'm trying to do in the MyAccess class.

Answer 1

Try the following:

 interface IAccessibilityFeature<T> where T : IAccessibilityFeature<T> { List<T> Settings { get; set; } } class MyAccess : IAccessibilityFeature<MyAccess> { List<MyAccess> Settings { get; set; } } 

Answer 2

This can be done with:

 interface IAccessibilityFeature<T> { List<T> Settings { get; set; } } class MyAccess : IAccessibilityFeature<MyAccess> { List<MyAccess> Settings { get; set; } }