How to keep BaseView's propertiesbinding and event when using CustomRenderer : ViewRenderer

    public class JVFloatLabeledEntryRenderer : ViewRenderer<JVFloatLabeledEntry, JVFloatLabeledTextField> { // JVFloatLabeledTextField is a custom ios UITextField

            var newView = new JVFloatLabeledTextField (new RectangleF(0, 0, 200, 40)){
                    // Add custom properties
            }; // JVFloatLabeledTextField is just a custom UITextField 
            SetNativeControl (newView); 
    }

But JVFloatLabeledEntry's base class Entry's members are all gone.
e.g. JVFloatLabeledEntry.TextChanged will never be triggered and all PropertyBindings like Entry.TextProperty, TextColorProperty are gone.

I really reached bottle neck, could anyone please tell me how to keep JVFloatLabeledEntry(CustomEntry)'s base class Entry's properties binding and EventHandlers. Thank you very much.