I want to do something like this. But I can’t use IMyInterface as the generic type for MyField because it is not promised to be managed. Is there any work around?

public struct Main<T>  where T: unmanaged
{
    MyField<IMyInterface<T>> value;

    public Main( Flag flag)
    {
        switch (flag)
        {
             case Flag.A:
                value = new MyField<A<T>>();
             break;
             ...
        }
    }
}

public struct MyField<T> where T: unmanaged { }

public struct A<T> : IMyInterface<T> where T: unmanaged {...}
public struct B<T> : IMyInterface<T> where T: unmanaged {...}
public struct C<T> : IMyInterface<T> where T: unmanaged {...}
public struct D<T> : IMyInterface<T> where T: unmanaged {...}

public interface IMyInterface<T>  where T: unmanaged
{
    //Some members.
}