public interface Example
{
    // some stuff
}

public class Something
{
    public List<IBindToKey> keybind ... // instantiate

    public Something()
    {
        keybind.ForEach(b =>
        {
            // these checks are what I want to reuse
            if (b.GetType() == typeof(Example1)
                (b as Example1).Value = // new value
            if (b.GetType() == typeof(Example2)
                (b as Example2).Value = // new value
        }
    }
}