Injecting logic into a service method

public void Main()
{
    _service.OnCreate_HasConflict += _service_OnCreate_CustomEvent;

    var response = _service.Create(model);

    if (response is MyCustomResponse<Profile>)
    {
       // the conflict event was fired and already handled by custom logic
    }
}

public class CrudService<TEntity> where TEntity : class
{       
    public event CreateDelegate<TEntity> OnCreate_MethodStart;
    public event CreateDelegate<TEntity> OnCreate_HasConflict;

    ...
}



ICreateResponse<Profile> _service_OnCreate_CustomEvent(IRepository<Profile> repository, Profile entity, out bool exitMethod)
{
    // do something, then return a custom response which involves ending the method

    exitMethod = true;

    return new MyCustomResponse<Profile>(entity.Id, entity);
}